Pegged Oil Pressure Guage

[D7N7MASTER]

I just finished installing my oil pres. guage and when I connected the wires to the guage the guage went full travel - pegged!!!
The wiring is correct & the sender is mounted with a metal bracket on the fan shroud. Whatz up???
Thanks, Gary

[914GT]

Gary
I'd look for a short circuit to ground on the wire to the sender. If OK check the sender, pull the wire off it and see if the meter goes to zero. You might also need to look at the wiring to the seat belt relay, maybe it's doing something strange.

[D7N7MASTER]

Thanks. I'll do that. Seat belt relay??? Mine was snipped by the p.o. I didn't know it until I replaced the carpet awhile back. I didn't mention it in my post - but I used a remote 12V battery to quickly function the guage after I routed the wire to the sender. That shouldn't matter - should it??? Thanks

[914GT]

The factory wiring harness connected the oil pressure sender to a terminal on the seat belt interlock relay with a green w/red stripe wire. But this is for the oil pressure light on the dash. Is that what you're replacing with a gauge? Make sure I understand right in case you're wiring a new gauge into the center console using the old oil temp gauge wiring. That would be a different set of wires. A remote 12v shouldn't matter as long as it's grounded to the car and hooked to the gauge the right way.

[D7N7MASTER]

I installed a "dual" oil sender. Connected the idiot light wire to one terminal of the new sender and a "new" wire the the other terminal of the sender to the sender terminal of the guage. But I didn't ground the remote battery to the car. Could that be it?
Thanks again.

[D7N7MASTER]

Yep. Bad ground. Works now. Cool!!! Thanks,