I screwed up and didn't mark my wires correctly. I am putting in a 3 gauge cluster gauge and am having problems getting my pressure gauge working. Just to make sure... the "+" means power right? the "G" means ground right? and the funny squiggly thingy is where the sender wire goes right? Now how do I figure out which sending wire is from my pressure sensor? I am using the stock 3.2 engine harness with a "adapter" harness going to my stock '71 harness. Is there a way I can find the pressure sender wire up in the dash so I can hook it up to the gauge? I had it before but I can't locate it now. Can I get some sort of tester on the wire to see if it the right one?

Just a guess, but I think the G is for gauge.