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Old 07-20-2012, 03:21 PM   #1
Join Date: Apr 2012
Location: Pennsylvania
Posts: 85
SUN #3575
Musikaldave is an unknown quantity at this point
That Black Wire???

Okay, so in the 7 blade pigtail there is an aux/power line (black) that runs to the battery charger in the trailer and I suppose that helps maintain the battery and supplies power to the rv when on the road and hooked to the tow vechicle.

My question is, to supply power to that circuit do I run a hot wire straight from the tow vehicle batter or does that wire need to come off the alternator?

I'm guessing that if I'm running off the battery in the tow vehicle it really won't make any difference. The only thing I really am unsure about is whether or not I should have a circuit breaker in that line?

Any response is a good one, thanks guys!

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Old 07-20-2012, 06:26 PM   #2
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Join Date: Apr 2011
Location: Maine
Posts: 3,086
SUN #2097
mainah is an unknown quantity at this point
Generally the best bet is to have some kind of disconnect at the TV that goes off with the key. It will work by just connecting it to the battery through a breaker or 30 amp fuse just be sure to disconnect the plug so you don't end up with a flat TV battery. You'll need at least a #8 wire going to the connector.
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