Red wire, black wire and white wires
I am hooking my battery to my trailer. I have 2 sets of cables. One has a white and a black wire. The other has a white and red wire. Which is negative and positive? I don't now, and when I hooked the...
Forum Discussion
Boon Docker wrote:
Set your multimeter to ohms. Ground one probe to the frame then touch the other probe to each wire separately.
A reading of zero to 1 ohm means that wire is negative.
Great idea! I never thought of that.
