fuel gauge / sensor

[firl]

background:
I just started to work on my friends porsche, his dash lights went out after a garage did work on his car, when he got it back he drove it 1 mile and then he smelled electrical smoke and stoped the car and pulled it over, and thats when he noticed that he had no dash lights after that. So I wired his dash lights to a wire that is only on when his head lights are on. When I took the dash off there was about 3 bundles of wires just melted together from electrical damage.

problem:

now the fuel level gauge on the dash is not working correctly. I found out which wire controls the gauge, but I think from the wires being so bad that I should probabbly run a wire directly to the dash myself, anyone have any insight to where the sending unit itself is?

thanks in advance

[YeTi]

the sending unit should be right on the top of the gas tank, acsessable from the rear of the interior.
though, i might be wrong... i don't think i am, but isn't that how it always is?

[firl]

ah, that would make more sense, only othere sensor Ive dealt with is in my own camaro. Thank you. I will go look at that later today

[firl]

Ok, I checked the sensor, doesn't seem to be getting power at all, anyone know what power goes to which prong? there is brown, yellow and a purpleish wire going to it, I assume that the brown is ground. I assume one needs to have 12 volts going to it, and the other sends a variable voltage to the gauge. Anyone able to go out and test to see which one is the variable and which one is the 12v only on when ignition on?

[YeTi]

sorry man...
couldn't tell ya yet.

[firl]

Alright, thanks, I will test the wiring further, I will probabbly have to make a custom wiring harness for this also.