Battery cut off switch question
All along, I've been under the impression that a cut off switch should be placed close to the battery and on the positive side of the system. Is this right?
Forum Discussion
As others have said, close to the battery is only necessary if it is a fuse or breaker also. As long as it is JUST a disconnect switch, anywhere is fine.
Positive or negative wire, either one, is fine with a single exception. Your TT probably has a breakaway brake switch. That should NEVER be disconnected from the battery. Ever. If you disconnect that switch and tow, the emergency brakes for the trailer are non-functional. Since the breakaway brakes usually use the frame ground, disconnecting the negative wire disconnects the breakaway brakes. The usual way around this is to disconnect the positive wire, but wire the breakaway brakes BEFORE the disconnect switch.
Positive or negative wire, either one, is fine with a single exception. Your TT probably has a breakaway brake switch. That should NEVER be disconnected from the battery. Ever. If you disconnect that switch and tow, the emergency brakes for the trailer are non-functional. Since the breakaway brakes usually use the frame ground, disconnecting the negative wire disconnects the breakaway brakes. The usual way around this is to disconnect the positive wire, but wire the breakaway brakes BEFORE the disconnect switch.
