4th gen fuel sending unit wiring - NJFBOA - Home of New Jersey's Camaros and Firebirds

TaKid455 · 02-21-2009, 11:34 PM

I 'm looking for a wiring diagram for a 4th gen fuel sending unit. Interested in where the wires go after the unit. relays, grounds, power sources, switches , ect. I'm putting one into a 2nd gen and need to know how to wire it to best suit my application. one of my main concerns is fuel pump shut off. does it shut off when it reaches a given pressure? continuous flow? where do LS1's have their regulator and what pressure is it set at?

BonzoHansen · 02-22-2009, 09:00 AM

Try the autzone website, they have a lot of wiring diagrams.

I'm no expert, but in the 99 I took apart the FP reg is part of the assembly in the tank. There is a FP sensor there too.

LTb1ow · 02-22-2009, 10:25 AM

Is the tank from an LT1 car or LS1 car?

sweetbmxrider · 02-22-2009, 01:38 PM

i'll try to remember and look this up for you. what year is the ls1 and sending unit in case there are any variances?

TaKid455 · 02-23-2009, 12:23 AM

Not sure of the exact year, but it is from an LS1 as per what I am told. here is a picture of the unit. Please disregard the sloppy welds. Its an R & D thing I'm working on.

TaKid455 · 02-23-2009, 12:26 AM

another