Bought a new Interstate 12V battery (Not a forever battery)for the TT on the 3rd of June to replace one that was totally dead. Hooked it up with a battery cut-off switch that I bought from Camping Wo...
You didn't say where you installed the battery cutoff, and whether it was turned on. Before doing anything else, check the cutoff wiring. If in the positive wire and the only connection to the battery post is the break switch, or if in the negative wire, and the switch is in the Off position, you will not charge when towing.
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