Battery on trailer breakaway switch

Kpackpackkelley wrote:
Morning everybody. Could the breakaway battery be wired in the charge system from the trailer with a PD and charge wizard.

However you do it, the breakaway wire (positive wire) goes straight to the battery positive post and is not fused. The battery has to supply the brakes when the 7-pin gets yanked out and also with any fuses blown.

It does not go to the DC fuse panel for the PD converter as a way to get to the battery, since that puts fuses and breakers in the path, a no-no.

You could parallel the little breakaway battery as a way to recharge or maintain it using the PD converter's second set of terminals or just have the trailer's main battery bank as the breakaway battery, but keep that pos wire from the breakaway switch direct to the battery positive post, no fuse.