how to wire a relay for fuel pump
This is the basic wiring diagram for SAFE electric fuel pump wiring. This particular application is using a black wire with yellow stripe as the power wire from the ecu this wire must be run to the 86 terminal of your fuel pump relay.
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Electric Fuel Pump Harness Relay Kit Pn 89618.
. So now instead of the stock ecu energizing the fuel pump it will energize this relay. Wire pin 86 of the relay to a 12v trigger. The fuel pump on this vehicle is an aftermarket in-tank pump.
Joined Sep 2 2006. Station pin 85 to the frame. Find a 12V source suited to supplying at least 15 amps such as a terminal block on the firewall or directly to the battery.
This 12v wire will now energize the relay to turn on. Locate pin 87 it comes from the relay and ends on the positive terminal on the battery. This video details how to add an electric fuel pump to your project.
I converted my truck from throttle body injection over to carburetion which required a modification to the fuel delivery. Locate pin 30 on the relay systemcircuit. 85 - Blue wire from Sniper.
In this video I show how a fuel pump relay works and how to bypass yours. Wiring in the Fuel Pump Relay. Fuel pump wiring for the RED circuit is generally going to carry a much higher current than the relay.
If youve got too laborious wires for your fuel pump as a result of you not having a connecter run a wire from the recent aspect of the pump onto pin 87. 30 - To pump. The relay should have 4 or 5 pins on it.
In our install we located the relay in the trunk for easy access. Remove the back seat to access the fuel pump cover. Connect the automobile aspect of that blackwhite wire you narrow to pin 86.
Install an in-line fuse of 10-15 amps and attach it to pin 30 of the relay using 12-10 gauge wire. Im installing an electric fuel pump and want to include in my circuit a Relay Circuit breaker Oil Pressure Safety Switch. I have a few questions on the Oil pressure safety Switch I terminal where.
2 Jul 26 2015. Fuel pump relay remote wire 12v or ground ls1tech camaro and firebird forum discussion. To make servicing easy we connected the pump power and ground wires with spade-type disconnect terminals.
The relay should have 4 pins on it. I did some research online and found a wiring schematic. I also show how to rewire your fuel pump for an upgraded fuel system or race car.
I strongly counsel running a fuse within the. Wire pin 85 to a good ground on the car. They are usually labeled 30 85 86 and 87.
Pin 85 is the ground wire. IOT Wiring Diagram. Run a dedicated power wire from your battery to pin 30 4.
The wiring seems incorrect to me but I can only get the pump to run off a relay with the following configuration. 86 - Switched 12 volt. The diagram is color coded per circuit and only a few things may need to be said.
I find it strange that the 86 pin has to have switched power instead of a ground. We focus on making this modification along with a Classic Update kit but the process wo. But then you will need to use a small current through the switches for the relay to last a reasonable number of years.
Undo the 10mm hex screws here theres 4 total and remove the fuel pump access plate to expose the fuel pump and the wiring harness. No A relay is only used when you wish to add safety features. Use the red fuel pump wire to stimulate the relay through pin 86.
Join the black wire from the fuel pump to the 30 terminal of the relay and the black wire from the. If youre not comfortable with electrical wiring tasks we recommend you have an experienced technician perform this service for you. Attach the 12 gauge larger yellowwhite wire from the.
Run a switched power source using small gauge wire 16 gauge to the relay to power the relay. 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. The pin 30 has a direct connection to the battery.
This acts as the trigger because its a switched power source and the relay will kick over to use the 30 position power wire when this trigger is activated. The harness you pull off must be tested with a ohmmeter. Therefore peradventure you wire your fuel pump to a fuse directly there is no need to use a relay.
They are usually labeled 30 85 86 and 87. To direct wire your fuel pump at first make the connections properly put your fuse close to the battery. How to rewire install fuel pump relay mod elec wiring diagram electric circuits with a should i use for volvo and page fiero hot wire instructions cis function ford windstar do it right lightning rodder testing technical another gm online re wires have harness kit 1999 2002 4 m20b25 r3vlimited.
Im using the blue fuel pump output wire to trigger a 40 amp relay to run my in-tank Holley pump. We drilled a small hole and used a grommet for protection to run the power wire to the pump itself. Connect the opposite finish of that wire to pin 87.
Wire pin 85 of the relay to the 12v supply wire from the stock ECU that you just cut. In this video Anthony goes over the basics of wiring up an electric fuel pump. Now reach under your back seats and undo the clips and 12mm bolts that hold the back seat in place.
However if you do want to control the pump through the relay box you can just use the large blue wire as a positive trigger and ground the.
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