Switch Fuel Pump Relay Wiring Diagram
So use a larger gauge wire for lower voltage drop.
Switch fuel pump relay wiring diagram. The switch will also let the pump run when you hit the starter because the engine doesn t have oil pressure yet. The wiring diagram illustrations in this article cover only. One wire goes to the pump one to the start circuit and the other to the ignition circuit. The wiring diagram illustrations in this article cover only.
It shows the elements of the circuit as streamlined shapes and the power as well as signal links in between the gadgets. Fuel pump wiring for the red circuit is generally going to carry a much higher current than the relay. The diagram is color coded per circuit and only a few things may need to be said. Finally the purple wire from the relay to the orange wire on the pressure switch back to the pump.
Fuel pump relay wiring diagram automatic transmission only note. On your web site it shows this diagram with 85 going to ground. 1994 fuel pump circuit tests gm 4 3l 5 0l 5 7l. A relay allows you to run thin guage wire from your switch to the relay so when you switch your switch it turns the relay one and allows current to pass through from your battery to your fuel pump.
Variety of electric fuel pump relay wiring diagram. So when there is no oil pressure the switch connects start to pump and as soon as you start cranking it runs the pump. The destructions say attach the 18 ga yellow wire to an ignition switched 12 volt source or independant fuel pump switch which is fused. The diagrams and photos show how to wire up the fuel pump and oil pressure switch to a commonly available industry standard iso type 1 form c single pole double throw spdt relay.
Fuel pump relay wiring diagram. The white wire from the pressure switch goes to an ignition source in the fuse box. 1992 1993 gasoline 4 9l 5 0l and 5 8l f150 f250 and f350 with dual single gasoline tank. I am a non wiring person i have a bosch relay 0 332 209 150 896.
1993 4 3l 5 0l and 5 7l gmc chevrolet pickups with the 4l60 e automatic transmission for the 1994 fuel pump wiring diagram check out the following article. In the wiring in the fuel pump relay 2. Should have 10 to 12 volts dc with key on engine off koeo or key on engine running koer. It states 86 goes to ground.
Nov 9 2008 13. Basic safe electric fuel pump wiring diagram this is the basic wiring diagram for safe electric fuel pump wiring.