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Old 12-17-2014, 05:56 PM   #15
Rivet Master
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2005 30' Classic
Burlington , Ontario
Join Date: Sep 2008
Posts: 2,732
Did your truck come with a towing package, and have you towed with it before?

Mine supposedly came with a full towing package including brake controller - but did not work, I forget if it was brakes, running lights or whatever but I distinctly recall something was inoperative - the truck was brand new.

Took it back to the dealer and it turned out there were extra fuses that had to be installed or wires connected, they didn't give me exact details - in any event that was the problem!

You can get 7 pin socket testers to stick in the truck socket - they have LED lights to confirm power on the various pins. Likely Harbor Freight would have them in the U.S.


Brian & Connie Mitchell

2005 Classic 30'
Hensley Arrow / Centramatics
2008 GMC Sierra SLT 2500HD,4x4,Crew Cab, Diesel, Leer cap.
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Old 12-17-2014, 07:33 PM   #16
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1974 Argosy 26
Morrill , Nebraska
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Under normal circumstances the brakes are powered by the TV.
BUT!!! The breakaway switch applies the brakes if you lose the coach. This requires that it be powered by the coach battery. Usually by a non fused wire.

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Old 12-17-2014, 10:13 PM   #17
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1999 34' Excella
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Hillsboro , Texas
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Replace batteries BEFORE towing...

Is the 'breakaway' switch pin/plunger installed? If pulled, it would engage brakes and drain batteries in fairly short order.

You must figure out the wiring of the 7way... oh, and BTW, did this 'work' before?

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