12v light switch / light wiring
I think I have confused myself, and before I close the ceiling up, I need to have clarification... I gutted my travel trailer, and I am down to bare metal, I took pics and documented as much as I cou...
Forum Discussion
The jacket color of the wires is secondary as to their purpose. You need to understand what you're trying to accomplish--sending power that is switched to a light fixture and supplying a ground at the fixture so the electrical path is completed back to the source of power. In our case that would be the battery (or through a fused distribution panel to the battery).
Conventionally, white wires are for (-) phase and black is for (+) phase. You only need to switch the black wire to interrupt power to the fixture. A bulb requires a full path to the source of power, hence both (-), (+) phases are present at the light fixture.
Conventionally, white wires are for (-) phase and black is for (+) phase. You only need to switch the black wire to interrupt power to the fixture. A bulb requires a full path to the source of power, hence both (-), (+) phases are present at the light fixture.
