im

Hi guys just wondering, I want to wire a toggle switch to the fuel pump to act as an on off switch...also want to wire in a LED to the same switch and mount the LED in the Car.as a theft deterrent...Anybody have diagrams on how to wire them up???....

JPrevost

Wire up a switch to the fuel pump relay on the dirvers side firewall. I'm thinking about doing this for testing and tuning purposes. I've been having fuel pressure problems so setting up the vac. ref. fpr in my parking spot is a lot easier than having to drive around with the gauge attached to my windshield.
Look up the wiring diagram for your ecm and it'll show you the fuel pump relay with colors for the wires.

im

Thanks Jprevost will do, but any diagrams would be even more helpful if anybody has them

Danno

Most TG's get 12 volts from 2 places during running. First the fuel pump relay, and then when oil pressure builds up a second source is the switch in the oil pressure sender unit. Disabling the fuel pump relay will still allow the car to start and run, only it will take a couple more cranks to get it to fire. You can pull the fuel pump relay out when it's running and it will continue to run. You need to break the line feeding the pump after both switches and most likely use a relay. Most garden variety toggle switches will not handle the current the pump draws over the long haul. I would suggest a relay controlled by a switch. You also need to give more info, year, engine etc. when posting-it helps when looking up wiring diagrams.

Danno

might be easier to disable the starter solenoid like they do with VATS

1986tpiiroc

DOH, , I thought i did something wrong when i hooked up my kill switch to the fuel pump relay. I didnt realize the oil pressure whould start the fuel pump. Im an idiot. Looks like im gonna put the kill switch on the coil. Watch someone is gonna tell me that will start on its own too!!!