Forum Discussion
beemerphile1
Apr 13, 2017Explorer
Bobbo wrote:downtheroad wrote:
Wire it on the negative line between the second battery and the trailer.hedge wrote:
also the switch should be on the negative side not positive like the fuse would be.
Don't do this. It will disable the breakaway brake on the trailer. Connect it to the positive wire. That way the breakaway trailer brake will still be functional even if you forget to turn the battery back on before towing.
Preach it! I'm with you 100 percent. With a MH, put it wherever you want. With a trailer, it goes in the positive with the breakaway feed connected prior to the switch.
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