Fuel Guage Sender

[motoxlifer]

I actually never took it out, so do I need to connect to the wire coming from my old computer or the fuel pump itself?

[motoxlifer]

OK here is what I've got: gray, black, ppl/white on one plug and blk, grn, gray on the other plug. So I'm guessing it's gonna be the ppl/white wire but I'm gonna wait on Nitrous to confirm it before I fry another guage. Thank for yalls help guys!

[RedHeartbeat]

Damn, that's a bitch that you fried a brand new gauge. Do you have a multimeter? You should be able to check the voltage on the wire to verify it's under 12v. Rocking the fuel tank, if the tank's not full, should make the voltage fluctuate.

[motoxlifer]

Yes but it's a POS from Wally world and it only works intermittantly, so I can't trust it.

[NITROUS]

Here you go, Do you remember your old oil pressure switch? It's tied to the fuel pump and sender also. Actually it's an oil pressure switch and gas sensor. It used to be located by the your old distributor and is key to your wiring.

Orange - Hot at all times (87 on relay) Goes to Oil pressure switch / sender and old VCM
Grey - oil pressure switch and sender 5 volt reference to VCM and or fuel pump power
Black - Ground
Purple/white - Fuel level signal to old VCM
Purple - To instrument cluster
Black/white - Fuel pump relay (86 on relay)
Red - Fuel pump prime connector (87A on relay)
Dark Green/white - (85 on relay) to old VCM
Black - Ground to VCM
Pink - Goes to old injectors on Vortec motor
Dark green - Fuel tank pressure to old VCM

Hope this helps out. BTW, the 4.3 and 5.7 wiring diagrams are pretty much the same. I wasn't sure what you had before.

[motoxlifer]

So basically I can just use the ppl/wht wire from the pump(I've got the bed off right now) or do I need to use the ppl wire coming off of the vcm?

[NITROUS]

Yes, that should work.

Do you still have your original fuel gauge? If so, why not use it?

[motoxlifer]

OK thanks alot guys I really appreciate it. Now hopefully my guage will work and be accurate. I'm tired of driving around without a gas guage. Thanks again

[NITROUS]

Did you see my reply?

[motoxlifer]

No I am using all Autometer guages. I couldn't figure out how to make my factory stuff work. I tried but that Chilton book just wasn't cuttin it. I didn't realize you had all the schematics until after I had already installed all the Autometer stuff. Oh well, it looks sweet as hell imo.