Power from Taillight is wired to fuel sending unit... Check!

There is no power at rest. The brake pedal wire has power, but thats because the brake switch is not making contact with the brake pedal, which would interrupt the circuit. So other than that, its all dead :p

I very much appreciate your help. And this is a very definite hack job that's going to take me a long time to sort out. (I get about 2hrs to myself on the weekend to work on this, so I make really poor progress. On the plus side, I don't see any evidence that the previous owner even attempted to modify any of the wiring harness's under the dash to the back of the car, I see some hacking in the engine compartment, but it seems to be legitimate.

I'll invoke threadnecromancy when I make some progress :p

67Dart273 said

Should not be power to it "at rest" pigtail or no. You've got something crossed up in there somewhere. I'm not sure I can help you further, as obviously the harness has been "hacked." There's only so far one can go on paper as here's the thing:

First, there's the possibility of just plain mistakes in OEM diagrams

Second the harness could be hacked

Third, the harness could be damaged, IE crossed and shorted.

You simply have to "dig in" and find it.

I'm so used to this sort of thing in old, hacked stuff that I learn to assume nothing and suspect the worst and check everything.. When you do that, it actually makes things easier.

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