Ok, I'm installing a new wiring harness, I have the wires figured out, but I cannot figure out the back side of the ammeter. (49 3600) It has the same markings as the fuel gauge (sender and Ignition). So which is "in" and which is "out"? Do I go by the + and - markings on the face? If so, is the + the in from the battery, and the - out to the voltage regulator?
