Battery cutoff switch

Dakota98 wrote:

Tennessee_Nomad wrote:
I have a battery cutoff switch on our camper. When the switch is off, does that cut the line from the truck seven pin to the camper battery also? Or should the camper battery charge when the power cord (umbilical) is connected from the camper to the truck, with the switch off.
My thinking is, when the switch is off, that cuts all power to or from the battery.

You are correct. Keep in mind, that you should always engage the switch before attempting to pull the TT. The brake-away switch is only active if the battery cutoff switch is on. This also includes charging the battery from the TV while in transit.

It depends on the wiring of the camper, of which there are many variations. Often, I understand the breakaway switch and brakes are wired straight to the battery, bypassing the disconnect switch—this may even be a legal requirement in some places, since there's nothing preventing you from driving with the main disconnect switch opened.

Likewise, it's possible the connection from the 7 pin connector is also on the battery side of the disconnect switch, and perhaps the converter/charger, and maybe the propane and CO detectors....