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Old 03-12-2015, 07:48 PM   #1
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no power from 7 way plug?

So I went to hookup new to me TV to trailer and had no lights.
I jumped #4 12v on plug to #3 taillights on plug and had nothing.
Checked fuse and connections, all good. Changed fuse anyway.

What am I missing?
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Old 03-12-2015, 07:54 PM   #2
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did you test the truck plug to a good ground and make sure it was good on the truck side ... then I would check the ground on the trailer ... no lights usually means no ground
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Old 03-12-2015, 08:01 PM   #3
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Ground is good from what I see
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Old 03-12-2015, 08:05 PM   #4
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well you would think it would carry through the hitch also but just a thought ... seems weird no lights , what about turn signals
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Old 03-12-2015, 08:15 PM   #5
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put a meter on the tv socket and make sure you are getting power at the bumper socket. If yes, and you've got nothing on the trailer, your problem is most likely a ground. Had this problem on my trip home from the gulf last week. Had to make an emergency stop at a very kind rv dealer who found the problem almost immediately. There should be a junction box under the tongue frame where the pigtail connects to the tt wiring. Looks just like a typical electric junction box because that is what it is. Remove the cover and inside will be a lot of wires where the power from the tv is connected to the trailer lites. Mine had plastic twist caps connecting wires to the tail lites, marker lites, etc. There most likely is a large bundle of white wires [not sure why there are so many] connected by one twist on cap. Too many wires in my mind to get a reliable connection for the ground. When the tech fiddled with the ground bundle the lites all popped on. He secured the grounds and connected one of them with a self tapping screw to the back of the junction box. Betting you'll find your problem in the same place.
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Old 03-12-2015, 08:20 PM   #6
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Often the fuse to the plug is not installed from the factory.
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Old 03-12-2015, 08:20 PM   #7
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Bassdogs advice is right on. If not let us know.
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Old 03-12-2015, 08:39 PM   #8
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Quote:
Originally Posted by Paintinfool3 View Post
well you would think it would carry through the hitch also but just a thought ... seems weird no lights , what about turn signals
no turn signals either!
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Old 03-12-2015, 08:40 PM   #9
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Quote:
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Often the fuse to the plug is not installed from the factory.
Did I not ay that I replaced fuse?
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Old 03-12-2015, 08:44 PM   #10
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Quote:
Originally Posted by Paintinfool3 View Post
well you would think it would carry through the hitch also but just a thought ... seems weird no lights , what about turn signals
Not concerned right now about TV just trailer plug which is hooked up to good battery
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