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
It seems a few folks are over thinking this.
Take a 12 volt light bulb and some scraps of wire, connect one side of the light bulb to the positive battery terminal and start connecting wires to the other side of the light bulb. Negative (ground) wires will make the bulb glow brightly, a very faint glow or no light at all means you have a positive wire.
Take a 12 volt light bulb and some scraps of wire, connect one side of the light bulb to the positive battery terminal and start connecting wires to the other side of the light bulb. Negative (ground) wires will make the bulb glow brightly, a very faint glow or no light at all means you have a positive wire.
