Holley sniper fuel pump relay. After relay cools down it'll start passing +12V volts .

Holley sniper fuel pump relay 623" lift/114° LSA H/R camshaft, Trick Flow R-Series FlowTech Induction Comp Ported intake, BBK 80mm Feb 25, 2020 · Excellent choice for owners with cramped space and those who would like to tone down fuel pump noise. May 7, 2021 · But I pulled the fuel relay and let it die. The relay control for the Sniper uses a ground to control the relay and the Terminator X, and all other Holley units, use a system +12V to run the relay. Perfect for owners Nov 11, 2024 · Another step backwards. I don't understand how the Sniper relay can click when the Sniper isn't yet hooked up. 623" lift 114° LSA H/R camshaft, Trick Flow R-Series FlowTech Induction Comp Ported intake, BBK 80mm throttle body, Holley Dominator MPFI & DIS, Holley 36 Aug 8, 2021 · Sniper EFI Tuning & Tech. Use the sheet metal screw to mount the relay connector to the vehicle. ) It's too "fine" of a filter to be used before the pump, causing fuel pump cavitation. 1. 470" forged steel crankshaft & H-beam rods, Wiseco 4. The large blue wire is the output to the pump, the pink wire is power from the ignition. I've run through the setup Wizard multiple times to ensure that I've set things up properly (again checked by multiple people). Nov 29, 2006 · Ronybuy Electric Fuel Pump Relay Kit 12V Fuel Pump Relay Bypass Harness Kit, 40 AMP Waterproof Relay Wiring Kit Electric Switches Universal Fit 12V System P/N 30247 Heavy Duty Long Wires 4. This will typically involve connecting the relay’s power and ground wires to the appropriate sources, as well as connecting the relay’s control wire to the Holley Sniper wiring harness. Testing negative switch for fuel pump from the Sniper show it works, sometimes. Jan 13, 2024 · I've installed a Sniper EFI with the Holley Dual Sync Distributor and an MSD 6EFI Ignition. I abandoned the Sniper 2's fuel pump relay, so I could run my own heavier gauge fuel pump wiring and also to avoid having to mount the stock relay on/near the firewall. Cataclean - Fuel and Exhaust System Cleaner. Dec 4, 2018 · '92 Ford Mustang GT: 385"/6. Blue Wire (Optional) = +12v Fuel Pump Relay Power Output - Used to directly power a fuel pump (max current 15A). I've done some research and I believe it would be backfeed. 5 Volts / 10. Efi For Classics Proving That Electronic Fuel Injection Can Be Hemmings. Installation of this kit is good insurance that the fuel pump will be receiving full voltage from the battery. After the initial five second Fuel Pump Prime Time, the ECU only runs the fuel pump when it detects an RPM signal. 623" lift/114° LSA H/R camshaft, Trick Flow R-Series FlowTech Induction Comp - Holley supplies a harness with a relay for the fuel pump. Connect one of the Red wires to the Positive wire (Red on Holley pumps) of the fuel pump. I hear the relay trigger and immediately hear my fuel pump, then after about 2-3 seconds I hear two brief clicks (injectors firing prime pulse) then after anohter second, I hear the pump relay shut off (and don't hear the fuel pump anymore. Connect the Black wire of the harness to ground. For best results, mount the relay as close as possible to the electric fuel pump. Just to make sure the fuel pump is wired appropriately as well. Jul 4, 2023 · Yes, as the trigger. Holley uses the term "prime" for two different functions. Relay Quantity 1. I'm assuming the relay is Eventually I get a ride home and grab a jumper lead and just jump main power outlet in the relay to the fuel pump and she runs perfectly fine. My Sniper, distributor and HyperSpark box triggers are sharing the same relay ran off the OEM distributor (+12V, 12 AWG, pink wire). The Sniper added enough fuel to keep the engine alive until I backed out of the throttle. 623" lift/114° LSA H/R camshaft, Trick Flow R-Series FlowTech Induction Comp Ported intake, BBK 80mm Kit Includes: (1) Holley Competition-Series Sniper Electric Fuel Pump, 110 GPH - 510-80000101 (1) JEGS Single Fuel Pump Harness and 30 Amp Relay Kit - 555-10564 (1) JEGS Oil Pressure Safety Switch - 555-11200 May 26, 2021 · Sniper EFI Tuning & Tech. 3. 5. We know the the fuses are there to protect the wire and open before the insulation melts. For them, however, the most useful parameter to evaluate is current measured in amps and not a voltage drop. 3L SBF, Dart SHP 8. Another crucial step is wiring the fuel pump and relay. They continue to perform well, however, the evolution of fuel pump technology has surpassed them in quiet operation and fuel delivery capabilities that an in-tank module can Hi everyone. Was starting to get the Holley Sniper 1 system ready to fire, I setup to flush the fuel line. I cut out the stock relay and extended the small blue ground Jun 29, 2019 · OK well in that case, it's setup appropriately to the system. You should still hear the injectors click to deliver the prime shot. 623" lift 114° LSA H/R camshaft, Trick Flow R-Series FlowTech Induction Comp . This led me to believe that the relay just went bad, however, I installed a new relay and the fuel pump still will not kick on when the key is turned. With that being said if you a lot for 20 amps total for a four injector system I'm sure that is more than enough. Jul 24, 2023 · Twice now I've had problems with the Holley fuel pumps failing. Jun 25, 2021 · We ordered up a Holley Sniper Retrofit 340 LPH Fuel Module with return capability . Red/black directly to battery, pink to push button ignition (power source also on relay). n FUEL PUMP RELAY: FUEL PUMP WIRE (THICK BLUE WIRE) – with relay built in. Apr 20, 2024 · 4. It’s supposed to only have 6-7. So the wire going to the fuel pump relay can be split and wired to the # 85 terminal of the water pump relay. This built in Sniper relay should be used to power your 58-60 PSI capable fuel pump. The large blue wire on the output of the fuel pump relay can be used to drive the pump as is and maybe you should simply use this relay for the fuel pump and run your other functions through the relay box. MSD Relay & Wiring Kits protect your electrical system and provide reliable and consistent power for your high performance electric fan, electric water pump, or electric fuel pump. o Additional wire and connectors may be necessary. I swapped the relay with the one I have running my distributor with no change and after testing the relay, I know it's good. FYI: The sock filter (HydraMat or OEM) of an in-tank fuel pump, is the pre-filter. Sniper Efi Installation Guide Holley Motor Life. I broke into the Holley wiring harness before the fuel pump relay and connected my existing relays ground switching terminal to the small blue wire on the Holley relay plug. I want to keep this feature with the new fuel pump connection to the Sniper. May God's grace bless you in the Lord Jesus Christ. Jan 9, 2023 · Originally Posted by Danny Cabral The Target Air/Fuel Ratio Table & Base Fuel/Timing Table (and MAP kPa & RPM axes/scales) should be configured using the Sniper EFI software: In the Sniper EFI software (), Target Air/Fuel Ratio Table (Fuel ICF) & Base Timing Table (Spark ICF), select "2D Table" Type (not "Simple"). By pulling every possible connection to ground such as a fuel pump, a relay, or a trigger, if the Sniper is still pulling . May 1, 2020 · It was repurposed as the power relay described above. Feb 8, 2023 · If you pull the pump relay you can avoid flooding the engine with repeated primes from ignition cycling during testing. These parts are not included with the fuel pump. Product Line Sniper 2 EFI. Both grounds on the fan pigtails go to battery ground. Sep 15, 2024 · Curious if any of you have experience not getting power from the Sniper relay to the fuel pump. I believe I have the relay setup properly, I have pin 30 to constant 12V, pin 87 to fan positive, pin 86 hot at all times, and pin 85 to the Holley. Jun 28, 1999 · 3. Thus, Holley can not guarantee an answer or timing on an answer. 623" lift/114° LSA H/R camshaft, Trick Flow R-Series FlowTech Induction Comp Kit Includes: (1) Holley Competition-Series Sniper Electric Fuel Pump, 110 GPH - 510-80000101 (1) JEGS Single Fuel Pump Harness and 30 Amp Relay Kit - 555-10564 (1) JEGS Oil Pressure Safety Switch - 555-11200 Mar 10, 2019 · I'm installing a Super Sniper and currently have my fuel pump linked from the relay to an oil pressure safety switch to shutdown when oil pressure drops. WIRING THE FUEL PUMP: NOTE: A fuel pump can be wired as shown in Figure 4, but the preferred method is wiring it through a relay, as shown in Figure 5. Maybe 1 out of 5 times does the fuel pump relay click. (40 micron is for carburetion. Unless you manually change it, the Sniper uses a default 15° before top dead center timing value during crank. Jul 1, 2022 · 12-270 fuel pump. Terminal # 86 gets switched power, # 30 goes to a good power source and has an appropriately sized fuse, and # 87 goes to the positive side of the water pump motor. Please be aware that this is a community forum. #85 - Blue wire from Sniper. If the Sniper itself was blowing a 30 amp fuse, you'd likely have melted components. 4. The pink wire from the Holley Sniper EFI system needs to be connected to the fuel pump positive wire. It runs and drives really well, but just randomly loses the ground signal on the small blue wire to the fuel pump relay. Grrrr Aug 22, 2020 · I checked all the fuses and all good. One option might be to use the current fuel pump feed as a trigger for a separate relay and fuse for the pump. Apart from the main fuel pump relay off the Sniper, my wiring is ran to the back of the truck to a 30 amp breaker and then to another relay in the bed of the truck, which runs into the fuel pump. Jul 29, 2023 · Brand new Sniper install on Ford 390. #30 goes to battery through a fuse, #87 goes to the positive side of the pump, pump ground should go to battery ground. Connect the fuel pump (orange lead) to a 12-volt ignition source. I take that to mean the Sniper is supplying +12V. My Wiring Harness and Relays Kits are the Ideal way to Wire High Amperage Components Like Fuel Pumps, Electric Cooling Fans, or Electric Water Pumps. 623" lift/114° LSA H/R camshaft, Trick Flow R-Series FlowTech Induction Comp Jul 31, 2022 · Well purchased a new pump relay. Dec 17, 2016 · HP EFI Tuning & Tech. So at least I know the pump itself is good. Oct 11, 2021 · Confirm that there are no leaks and if you haven't done so, install a fuel pressure gauge on the inlet side of the Sniper to confirm that you have 60 PSI. Since the Sniper setup uses its own fuel pump relay (I have it mounted in the right rear of the engine bay on the firewall), should I take the relay out of the RF fuse block? I ran the blue wire back behind the dash and connected it to the tan wire that is in the "rear harness" bundle. This relay supplies a switched 12V for the fuel pump on a thick blue wire - the output from the Sniper that controls that relay is also a blue wire but smaller diameter. The first occurrence happened after driving perhaps 16 miles. Jul 25, 2023 · Only wiring fault I found was at the female fuel pump relay receptacle, pin 30 & 87 are reversed in harness, relay function seems the same and it runs power though it when relay receives ground via small dark blue wire. Fuel pump relay constant power - pass (I see +12V volts 100% of the time). 200" forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232°-244° duration . It is important to use a relay for the fuel pump, as it allows for proper control and safety. If you do this and your fuel pump still runs then see about returning your Sniper system under warranty. I installed a new Sniper EFI unit in my 1990 Grand Wagoneer last weekend, and when we turn the key to prime the unit, the fuel pump doesn't engage. Glad the Sniper was in Closed Loop and the Learn Enabled. Our tank is just a cylinder that mounts in the back of the vehicle, above the rear suspension. Fuel Hose and Fittings Mar 18, 2017 · The kit comes with the fuel pump relay harness with the pink ignition wire going in & out of pin 86 on the relay. Jun 10, 2022 · You can also use the small blue wire at the fuel pump relay as a ground trigger for your new relay and eliminate the Holley relay entirely. Since the small blue wire is a ground trigger from the Sniper you must ensure that it's routed away from high current wiring and ignition wiring to avoid an introduction of EMI/RFI. This is my first post/question, hopefully I’m in the right area. Replaced fuse with a circut breaker, ECU no longer losses connection but pump still loses pressure. Sniper EFI Tuning & Tech. Parts Included: 1- Relay 1- Harness w/Connector 1- Circuit Breaker 1 - Electric Fuel Pump Mounting and Connecting Hardware 1. I still don't have the negative to the Sniper unit hooked to the battery. 4 out of 5 stars 39 Aug 9, 2021 · The Sniper will turn the pump off in the event of a stall, for example. 623" lift/114° LSA H/R camshaft, Trick Flow R-Series FlowTech Induction Comp Mar 22, 2020 · I disconnected and reconnected negative battery cable a dozen or so times. 200" forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232°-244° duration/. 623" lift/114° LSA H/R camshaft, Trick Flow R-Series FlowTech Induction Comp Ported intake, BBK 80mm Harness includes the Switched 12v Power Wire, Main Battery Power and Ground, Fuel Pump Relay, Coil - Input wire, and HyperSpark Distributor connector Braided split wire loom to keep the wires protected and your engine bay clean For Sniper 2 EFI Throttle Body Systems - Without a PDM Features: 1x 5' 12g Main Battery Power Wire, 1x 5' 12g Main Battery Ground Wire, 1x 30A Fuse with Cover with May 8, 2017 · You can run the pump with it all hooked up to the Sniper for testing and getting fuel flow. Mar 15, 2020 · -Holley Sniper EFI $999 Holley Sniper EFI 550-511 Holley Sniper EFI Self-Tuning Kit - Black-Holley sniper fuel pump module $349 Holley Sniper EFI 12-300 Holley EFI Fuel Tank Modules - 255 LPH - Camaro, Firebird & Nova-6 feet 100 psi hose and 5 fittings $45-New tank $140 ( your stock tank is fine )-Thermostat housing/with oxygen sensor 16$ Nov 9, 2021 · While you're trying to check your timing it's a good idea to pull the fuel pump relay from the Sniper harness. 2. It features prime and safety Oct 14, 2020 · If I remember correctly, the main power lead comes with a 30 amp fuse. E. Also a separate 30 amp 3-pin toggle switch 340 LPH Drop-In Retrofit Carbureted Fuel System-E85 Compatible Supports up to 900 Carb HP (HP Rating @ 6 PSI at 13. 2) Pin #86 on both relays go to the battery +. And if your setup requires two fans to keep it cool or you have an auxiliary fan on your oil cooler or trans cooler, a second fan can be controlled with a ground trigger by adding an additional relay and using the output harness within the Sniper 2. My main question is the Sniper fuel pump relay. Apr 14, 2021 · The car has a separate switched +12V circuits for start & run. These kits include high quality heavy gauge wiring, 30 Amp Relay, 30 Amp circuit breaker, pre-wired relay connector, crimp terminals & hardware. Connect the Green/Black wire to a switched 12V source. #86 - Switched 12 volt. May 16, 2022 · Having a strange issue with the preinstalled fuel pump relay in the Sniper harness. Holley Sniper 30 Amp Fuel Pump Relay Kit Combined Cancer/Birth Defect WARNING This product can expose you to chemicals including Cadmium which is known to the State of California to cause cancer on birth defects or other reproductive harm. At this point you should be able to activate the Sniper. I opened the harness between the Sniper unit and plugs. The wording of the C-pin function in the Holley documentation is really strange, +12V Fuel Pump Supply From Relay. Dec 31, 2022 · New Sniper unit. Oct 12, 2016 · '92 Ford Mustang GT: 385"/6. Oct 28, 2024 · In reference to "Fuel Pump Relay Out" (10 amp max) Red wire (HP & Dominator EFI), Blue wire (Sniper EFI): This controls the Fuel Pump Prime time (default 5 seconds). 623" lift/114° LSA H/R camshaft, Trick Flow R-Series FTI Comp Ported intake Step 5: Wire the fuel pump relay. Each kit comes with easy to follow instructions that are specifically Fuel Pump and Relay. Can someone please verify the correct relay wiring for a 5-pin relay? I assume Holley is correct in their manual, but everyone else online is showing it different. NOTE: These Holley fuel pump requires the use of a bypass style fuel pressure regulator (Part number 12-847 for carbureted applications and 12-846 for EFI applications). Jan 31, 2021 · As AndyF mentioned, the fuel pump is powered by the fuel pump relay. The Sniper & relay were in series. My tuner verified the prime time was still set to the factory time Holley already had in there. Feb 26, 2022 · I've looked through the PDF file multiple times and have looked online, but could not find a wiring diagram for the premade harness that's supplied with the Sniper that has the fuse and fuel pump relay premade for you. After double checking all connections and checking for current, everything is as it should be. The fuel, lines, pump, electronics, all should be kept cool in a performance application. I've ordered new pump. Harness includes the Switched 12v Power Wire, Main Battery Power and Ground, Fuel Pump Relay, Coil - Input wire, and HyperSpark Distributor connector Braided split wire loom to keep the wires protected and your engine bay clean For Sniper 2 EFI Throttle Body Systems - Without a PDM Features: 1x 5' 12g Main Battery Power Wire, 1x 5' 12g Main Battery Ground Wire, 1x 30A Fuse with Cover with Feb 14, 2025 · EFI Wiring Harness, Main Battery Harness, Fuel Pump Relay, Sniper 2 EFI, Power Distribution Module, Each. The long wire runs in these kinds of installations can sometimes result in a voltage drop at the electric pump. #30 - To pump. Oct 5, 2023 · After fuel pump - 10 micron post-filter. Pumps can be run staged or in parallel for maximum output. ) The 40 micron (carburetor) fuel filter has no place on an EFI fuel system. ” Sep 25, 2021 · When I upgraded to the Sniper system I kept the existing fuel pump wiring and relay. Jan 18, 2024 · The fuel pump wouldn't came on and the car wouldn't start. Installed the new pump and started the car and it started puking fuel through the vents on the float bowl (Holley 4150). Datalog attached of it shutting off while idling. The fuel pump draws amperage from the 30 or 40 amp relay and the +12V & ground wiring gauge, not the Sniper EFI main wiring. : Pink, red, small blue and large blue. Can anyone tell me or show a picture of the factory wiring locations on the relay. There's the fuel pump prime which should occur for about 5 seconds when you turn the key on. Having no diagnostics with me, I had the Ranchero towed back to my house Sep 17, 2021 · the Sniper knows the engine is running and sustaining RPM (tach input on the handheld reflects negative side of coil). Start by identifying the terminals on the relay. The fuel pump is Aero 750 which claims has 20 amp draw so should be fine with the preinstalled 30 amp. Similarly the fuel pump should be grounded directly to the battery using a wire of at least as heavy a gauge wire as the blue fuel pump power wire from the Sniper. Product Line: Sniper 2 EFI. So I unplugged the fuel pump relay and ran +12V directly to the blue wire, and the fuel pump kicked on. Do not require a return line or external regulator. 3) Pin #87 on one relay goes to Fan #1, pin #87 on the second relay goes to Fan #2. Wiring Diagram Msd Solid State Relay 1985 Ford Mustang Holley My Garage. I run a Aeromotive Dual Phantom in-tank setup with one pump on all the time and the #2 pump comes on at 3 psi boost. I purchased the Sniper 2 Master Kit, complete HyperSpark and the PDM. Harness Purpose: Main / Fuel Pump. After about an hour of troubleshooing I found the issue. In other words, the Sniper EFI only triggers the relay's coil terminal. After relay cools down it'll start passing +12V volts Feb 27, 2021 · Holley Sniper Efi 12 303 Fuel Tank Modules 255 Lph Gm A Body. 5 amps, then that it's unusual and you should probably contact Holley. Any help greatly appreciated. Make sure to terminate blue wire properly if not utilizing blue wire to provide power to the fuel pump. And the small wire is a commanded ground from the Sniper. Relay Kit (30A Min) – Holley P/N 12-759 or equivalent o 2 relay kits needed, one for each pump. The other pins on the relay are the same: 87 battery, 85 blue wire from sniper, 30 pump. Aug 7, 2021 · Not sure where to start looking. To wire the fuel pump relay, you will need to refer to the wiring diagram provided by Holley Sniper. I had remote mounted the fuel pump relay to the trunk near the battery. '92 Ford Mustang GT: 385"/6. While installing the new relay, I noticed that the Holley supplied 30 amp fuse had a loose spade connection which when heated lost connection to pump and ECU. Check for any fuel leaks before starting vehicle. In this line, add an in-line fuse holder and a 7. Apologies if this has been covered. 7. The wiring seems incorrect to me, but I can only get the pump to run off a relay with the following configuration: #87 - Battery. 4 AMP Draw) External electric fuel pumps have been the performance standard for decades. But dark blue pin 85, has ground when key is on & off, and stays grounded so the pump always runs Mar 17, 2021 · Sniper EFI Tuning & Tech. The relay only clicks for a second or two, then seems OK. The Sniper fuel pump relay was removed and the small blue wire that comes out of the Sniper to their relay was run to the ground side of the trigger circuit for the fuel pump relay in my existing wire harness. With the oil pressure switch, I had to wire it in parallel coming off ignition. We pulled the pins because of no power to the pump, but we think we figured it out, but we didn't note the factory locations on the relay. All spark plug wires are pulled away from any Sniper wiring, the handheld doesn't glitch at all when it happens. View All May 3, 2024 · So I’m attempting to set a Electric Fan on my Sniper, looking at the manual it says to hook the light blue wire to the relay ground trigger. After testing, wire the pump into the Sniper wiring and REMOVE the Sniper fuel pump relay. Dec 11, 2024 · EFI Wiring Harness, Main Battery Harness, Fuel Pump Relay, Sniper 2 EFI, Power Distribution Module, Each. Holley has very strict instructions to wire the main power leads for the Sniper and the HyperSpark directly to the battery. Will have to drop the tank and pull the pump to find the cause. Sniper Efi Main Wiring Harness Com. Table Of Contents. The setup is 1986 Buick Regal bone stock 307 Holley Sniper with HyperSpark and a Sniper tank with a 255 LPH pump. So how would I use the blue wire on the Sniper harness? As a trigger to the other 3. I needed to connect both the start and run circuits to the oil pressure switch so that the fuel pump would run during starting. The entire fuel system should be cool is a general philosophy. After checking the fuel system over, I found that the relay for the #2 pump failed. Apr 3, 2020 · The Sniper harness includes a fuel pump relay (other Holley systems do not), so the decision was made to eliminate that relay and added it to the Bussmann panel for sake of simplicity. Instructions say to just wire another relay inline. Sep 9, 2021 · Fuel Pump relay - input from Sniper - Pass - I see +12V from Sniper relay to the fuel pump relay (trigger wire). The 12-270 utilizes a 3/4-16 O-ring Dec 1, 2022 · 1 Sniper Stealth 4500 (550-841 Shiny, 550-842 Black, & 550-843 Gold) Holley Sniper EFI FUEL INJECTION INSTALLATION MANUAL Read this manual before using this product. (I know you're not using it. Follow the wiring diagram to wire the fuel pump relay. Jan 7, 2023 · My apologies if I missed this in a search. It won't flood anything, that only happens if you key-on and boot the system, but don't start it a bunch of times and the prime shots start adding up. I have a somewhat basic Sniper XFlow installation. Typically, a fuel pump relay will have four terminals labeled “30,” “87,” “85,” and “86. 2 block, Eagle 3. I had a relay pack mounted so I just connected to that and wired assuming Holley was supplying the +12V. Holley says terminal 30 should be fan, 87 for battery, 86 for battery (no key on trigger or switch needed), and 85 for Sniper wire. 5 amp fuse. Can anyone help me with the writing of this circuit without breaking into the prewired lead of the Holley pump relay? Jul 3, 2022 · Please be aware that this is a community forum. So looking at your picture, the large red wire is fused power from the battery/main harness. I. Jan 28, 2020 · May God's grace bless you in the Lord Jesus Christ. This signal wire direct from the Sniper controls the ground side of their fuel pump relay in their harness Jul 21, 2020 · The relay hick up is PROBABLY really the injectors firing the prime pulse after the pump relay has kicked on. This Holley kit is intended primarily for those applications running an electric pump. Oct 1, 2021 · Sniper EFI Tuning & Tech. I need some help installing the Holley EFI PDM. Let me start by say that wiring is not my thing! My question is my fuel pump has a 30 amp draw and I understand the relay on the Sniper is rated to 15. Note that the vehicle, 1975 Ford Ranchero, has been driven no more than a hundred miles since the Holley Sniper installation. Hi all, I just completed a Sniper 2 & HyperSpark install and had a question about the fuel pump relay wiring. The pump ran, but no fuel flow from the Holley in-tank returnless pump. Those seven startups when it shuts off, the car starts within a second even after sitting for three weeks. Motorcycle and Powersports. Step 6: Connect the ignition wires. 3 %âãÏÓ 57 0 obj /Linearized 1 /O 60 /H [ 1308 259 ] /L 79686 /E 73230 /N 1 /T 78428 >> endobj xref 57 33 0000000016 00000 n 0000001007 00000 n 0000001205 00000 n 0000001567 00000 n 0000001792 00000 n 0000001975 00000 n 0000002014 00000 n 0000002036 00000 n 0000003650 00000 n 0000003672 00000 n 0000005351 00000 n 0000005373 00000 n 0000007100 00000 n 0000007122 00000 n 0000008726 Wiring the fuel pump relay correctly is crucial for the fuel pump system to function properly. HLY558-191by HOLLEY. 6. Fuel pump relay power to back of car to the pump - Fail - relay is not sending +12V volts as it should. Kit Includes:(1) Holley Competition-Series Sniper Electric Fuel Pump, 110 GPH - 510-80000101(1) JEGS Single Fuel Pump Harness and 30 Amp Relay Kit - 555-10564(1) JEGS Oil Pressure Safety Switch - 555-11200. It's wired as shown in the attached diagram (checked about ten times with multiple people checking it). This setup allows you to install a high-pressure fuel pump into virtually any fuel tank, including the one that’s in our T-bucket. Attach the in-line fuse holder to the remaining Red wire. Disconnect the ground cable from the battery. Holley Sniper Efi Wiring Spot Jun 13, 2018 · Voltage and ground issues could be placing higher loads on the pump wiring. Other people are saying 85 for Post Pump Filter: Each of the Hydramat Pre-Filters that come with the module are 10 Micron filters making the use of post filters optional, not required. This prevents the system from producing a prime shot and Cranking Fuel every time you try to recheck. You can pull the fuel pump relay and apply 12V to the pump wire to test all the wiring. Replacement Fuel Tank- Sniper EFI now offers bolt-in fuel tanks for most popular applications, these require assembly but include new straps, fuel pump and sending unit. May 14, 2024 · The PDM can also distribute power to an EFI fuel pump and a cooling fan. Nov 8, 2017 · There should be no relay added to this wire. I had a low oil pressure switch installed with the old electric fuel pump to shut off the pump when oil pressure was low (like in a crash). The fuel pump relay has a 15 amp fuse powered by the main 30 amp fuse. I'm looking to convert to Sniper EFI, and just going over possible connections for the future, I currently have my fuel pump wiring and relay all located in the trunk of the car. The only thing this small blue wire should be used for is the fuel pump. My problem is the kit came with the wiring harness, that has the fuel pump relay in it. Andrew Aug 27, 2022 · All of the potential relay connections such as fans, and the fuel pump, utilize ground triggers. Feb 17, 2024 · Hi. Put a fuel pressure gauge on it and the SOB had 12 psi of fuel pressure. Jul 26, 2023 · How To Lock Out A MSD Distributor for Sniper EFI; Fuel: The Most Cost-Effective Twin Fuel Pump System - Holley's Sniper Twin Pump and Manifold Kit; Carb to EFI Conversions Are Easier than Ever with New Sniper Drop-in Fuel Pump Master Kits; Holley Sniper In-Tank Retrofit Fuel Modules; Holley Sniper EFI 340 LPH E85 Fuel Pumps Feb 24, 2021 · 1) I need to connect the Sniper light blue wire to pin #85 on one relay & the Sniper light green wire to pin #85 on the second relay. NOTE: The Holley fuel pump utilizes O-ring sealed inlet/outlet ports. Instruction manual is found here, just use control F to search for the words you want. 4) Pin #30 & Pin #87A are Feb 16, 2023 · When you're looking to feed some serious horsepower on a budget, take a look at our Sniper Twin Pump and Manifold kit! Our manifold kit uses 2 inline pumps to bolster your flow rate. Jul 16, 2020 · The Sniper harness includes a fuel pump relay (other Holley systems do not), so the decision was made to eliminate that relay and added it to the Bussmann panel for sake of simplicity. Aug 9, 2021 · The benefit of leaving the existing fuel pump relay and using the large blue wire as a positive trigger at the SS relay is that you can pull the relay for theft control. I’m using the blue fuel pump output wire to trigger a 40 amp relay to run my in-tank Holley pump. Also, when testing the Sniper or where you would have to activate the ignition several times you would be able to pull the relay to prevent excessive fuel primes. Plug fuel pump relay harness into the relay until it locks into place. This allows the Sniper to control my harness fuel pump relay the same way as the supplied one. Apr 12, 2024 · All that additional headroom in the capability of the relay will help keep the relay cool and there must be a fuse to limit current for clogged/overheated fuel pumps. Truck restarts every time. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. Holley P/N 12-753 can be used with any electric fuel pump, as long as the current load %PDF-1. It's for the 7 Dec 22, 2020 · The fuel pump relay needs to have +12V to the #86 terminal, #85 is the light blue Sniper fuel pump wire. I'm going to put the Sniper on its own relay, and the distributor & HyperSpark box together on their own relay. dhkpauv tjzxyx vlur yrfcn qdvlthq rpbzghw syxefn jrpo gryrh plap npkeg dqkjvf bus lofs roveaw