Bobbo wrote:
enblethen wrote:
I would suggest marking the ground wires with black tape and the positive wires with red tape.
I prefer green tape for ground. Black can be positive or negative under different systems/circumstances. Green is ALWAYS ground.
Green is ground with 120v, but could be positive with DC 12v. Eg 7-pin wire, and ISTR it was positive to the battery in somebody's RV a while back too. Can't remember the trailer's brand.
Not sure "ground" is correct with DC either, but we use it with our negative grounded RVs.