how to wire a relay for fuel pump
Joined May 19 2008 939 Posts. The relay should have 4 pins on it.
Part Of The Safety Relay For The Electrical Fuel Pump A Y Adapter Off The Fuel Pump Fuse To This Relay That Connects To T Kill Switch Datsun 240z Restoration
Wire pin 85 of the relay to the 12v supply wire from the stock ECU that you just cut.
. Strip approximately ¾ inch 20 mm of insulation from the end of the pink wire on. I also show how to rewire your fuel pump for an upgraded fuel system or race car. So use a larger gauge wire for lower voltage drop.
This 12v wire will now energize the relay to turn on. 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. Only show this user.
This is how the factory switches devices like the fuel pump. We focus on making this modification along with a Classic Update kit but the process wo. Run a dedicated wire from your battery to pin 30 on the relay.
The diagram is color coded per circuit and only a few things may need to be said. Each load should have its own fuse and relay. The fuel pump relay can be located in a plastic container or box usually black containing all of the.
2Then run the 12g from the breaker through the firewall into the passenger compartment to the bosch relay use terminal 30. Wiring in the Fuel Pump Relay. I have ordered a relay kit to bypass the TIPM relay with my own incase it is a fuel pump relay issue.
Wiring Fuel pump Relay And Oil Pressure Safety Switch. Wiring in the Fuel Pump Relay The relay should have 4 pins on it. If you have any of the stock wiring under hood then any of the pinkblack wires are hot.
Then remove the relay from the box. Discussion Starter 1 Jul 27 2015. Attach the 18 gauge smaller yellowwhite wire to a switched 12 volt source or fuel pump switch using the red ring terminal if necessary.
This video details how to add an electric fuel pump to your project. Key on If you have gutted wiring then all you need is relay output connected to the old pump feed wire heavy red than runs to pump through stock fuse. So now instead of the stock ecu energizing the fuel pump it will energize this relay.
Remove the relay centers cover and locate the fuel pump relay by reading the diagram. Run a wire from pin 87 to your factory wire. Isolate the system and break it down.
Wrap the pink wire from the new fuel pump relay wire harness around the pink with green trace wire at the location the insulation was removed Figure 20. Jump to Latest Follow 1 - 9 of 9 Posts. All you need is to run the greenwhite wire at pump relay to a key on Ign source.
Wiring in the Fuel Pump Relay. Then lift the car hood or bonnet and locate the relay hub. Run a wire from pin 87 to the positive wire on your fuel pump.
You can find it at the engines right-hand side chamber. This 12v wire will now energize the relay to turn on. In your drawing you have a couple of choices.
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 fuel pump on this vehicle is an aftermarket in-tank pump. And insert the other end of the wire into the lower-right pin slot of the 4-pin receptacle where the fuel pump relay plugs into the relay center.
3Run a 12g from the bosch relay use terminal 87 to a fuseable link. Wire pin 85 to a good ground on the car. Wire pin 86 of the relay to a 12v trigger.
To make servicing easy we connected the pump power and ground wires with spade-type disconnect terminals. 1967 chevelle Registered. Fuel pump wiring for the RED circuit is generally going to carry a much higher current than the relay.
In our install we located the relay in the trunk for easy access. A 5 inches copper wire with ½ inch of stripped insulation from both sides is taken. The relay is noting more than a high current switch it requies a load source ground and signal.
The load is the component your applying power to electric fuel pump the source is a cable from a 12V batery grounds are placed as close to the component relay fuel pump as possible wthin reason the signal in your case will. Wire pin 85 of the relay to the 12v supply wire from the stock ECU that you just cut. You can jump pole 30 and 86 together and run the wire from from pole 85 to the toggle switch and a wire from the other side of the toggle switch to ground.
Steps Before you start make sure to park your vehicle on level ground. That would tell me if it is a relay issue or fuel pump issue. They are usually labeled 30 85 86 and 87.
Run a dedicated power wire from your battery to pin 30. Attach the 12 gauge larger yellowwhite wire from the relay to the fuel pump. Wire pin 86 to a good ground on the car.
Insert one end of the copper wire in the upper left of the fuel pump relays four-pin receptacle. Insert one end of the copper wire into the upper-left pin slot of the 4-pin receptacle where the fuel pump relay plugs into the relay center. So now instead of the stock ecu energizing the fuel pump it will energize this relay.
They are usually labeled 30 85 86 and 87. 1 Run the 12 gauge wire from the positive post on your battery to the breaker located in engine compartment. If I do need to bypass the relay with my own relay do you know of a wire that supplies 12V at key on that I can use to energize the relay.
Attach the red 12 gauge wire to the circuit breaker after cutting to length using a yellow ring terminal. In this video I show how a fuel pump relay works and how to bypass yours. How to rewire install fuel pump relay mod should i use a for the h m b elec wiring diagram bos only mopar forum re wires have question 340 stealth honda tech.
We drilled a small hole and used a grommet for protection to run the power wire to the pump itself. Wire pin 85 of the relay to the 12v supply wire from the stock ECU that you just cut.
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