Battery disconnect wiring
On the house batteries, do you break the positive or negative on the disconnect. Am seeing it done both ways?
Forum Discussion
Lynnmor wrote:
It really doesn't matter.
Contrary to popular opinion, I do wire the breakaway switch so that it turns off as well. If the switch gets accidentally pulled, or a short in the brake wiring occurs, I can simply turn off the power hopefully before there is a fire. There is no fuse in the brake circuit.
This is dangerous because if you forget to turn the battery back on, you have no breakaway brakes.
While I agree with disconnecting the negative wire first, that doesn't apply in this case. The disconnect switch should be on the positive side of the battery since you are not risking shorting a wrench handle to ground while removing it. That way, if it is a trailer, you don't disconnect the breakaway brakes (which SHOULD be connected directly to the battery). If it is a MH rather than a trailer, it really doesn't matter.
