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Originally Posted by CA_flyfisher
Thanks Bill,
Is the charger on the TV generally not strong enough to charge its battery and the TM battery at the same time when the fridge is running?
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Well, technically what is happening is that the charger (alternator) in the tow vehicle is plenty strong, but the tow vehicle was wired with undersize wires. The voltage drop in the long skinny wires between the alternator (way up in front of the tow vehicle) and the refrig is so big that not enough power reaches the refrig to meet its demands. The TM battery attempts to take up the slack, and gets discharged. The solution is to run a new pair of heavy wires (+12 VDC and ground) from the alternator to the 7-pin connector on the tow vehicle's rear bumper.
By the way, a couple of our members have reported that their tow vehicle came from the dealer with the trailering fuse not installed! You should probably check this. If you have a wiring diagram for the 7-pin connector, plus a test light or voltmeter, you can check it at the connector. If you don't have these, an easy way is to hook up the TM to the tow vehicle, disconnect the TM's battery (just pull the fuse that is in the red battery wire), and see if the TM interior lights work. If yes, then the tow vehicle is supplying power to them, so the tow vehicle fuse is present.
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I could not get to the link you pasted...
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Oops, sorry, that's because you are a Guest of the forum, not a sponsor, so your access to the technical sections (where much of the meat of the forum is found) is limited.
Bill