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Old 07-15-2016, 09:02 PM   #1
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No brake lights

Hello all. I'm in need of assistance. I have a shamrock 19, and am traveling to florida. I seem to have lost my brake lights and signals. All of the other exterior lights are functioning. I have already replaced the bulbs just to be sure. This did nothing. Any help would be greatly appreciated.
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Old 07-15-2016, 09:21 PM   #2
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What's your tow vehicle? Some of the newer model trucks have separate fuses for the 7-way connector.
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Old 07-15-2016, 09:31 PM   #3
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Originally Posted by emm-dee View Post
What's your tow vehicle? Some of the newer model trucks have separate fuses for the 7-way connector.

2013 silverado 5.3
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Old 07-15-2016, 09:56 PM   #4
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Your truck will have trailer fuses up in the engine compartment


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Old 07-15-2016, 09:58 PM   #5
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I sure hope that's the problem. If not I guess I'll keep my wife close on my tail. We are taking two vehicles. Then when I set up, I'll have 6 days to fix it right.
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Old 07-15-2016, 10:25 PM   #6
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Two fuses blowing at the same time? I would wonder if there is a separate ground circuit for the brakes/flashers on the trailer (they are the same hot circuit). But here's a wiring schematic for a 2013 Silverado... Hope it helps....
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Old 07-15-2016, 10:27 PM   #7
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Silverado owners manual, Page 10-41, shows Fuse 1 and Fuse 3 control trailer left and right turn/stop lights. May or may not be the problem, but if they are failed I think you should try to find out what caused them to short out in the first place.

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Old 07-15-2016, 10:28 PM   #8
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When you say all the other exterior lights are working, I'm assuming you mean the yellow and red clearance lights at the top of the TT??

If so, then your problem is NOT the tow vehicle (at least not for the tail light circuit, which also powers the clearance lights). I suspect you've lost the common ground associated with the tail lights and brake lights. On my Roo 19, you accessed these by removing the thin plywood panels that FR installed on each end (left and right side) inside your rear storage compartment.

As I recall, the wiring for the rear top clearance lights drops down and is tied into the tail light wiring. There will be two separate power wires coming from the front of the trailer, one for the tail lights and one for the brake lights. But there is only one ground wire. But this ground wire has to tie into the ground wires for all the clearance lights, tail lights and brake lights in the back of the TT. This ultimately requires a number of splices into the ground wire. I suspect that the ground wires for the tail lights and brake lights may have been tied together, and then to ground, but that connection has been broken.

Hope this helps. Good luck.
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Old 07-15-2016, 10:29 PM   #9
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Two fuses blowing at the same time? I would wonder if there is a separate ground circuit for the brakes/flashers on the trailer (they are the same hot circuit). But here's a wiring schematic for a 2013 Silverado... Hope it helps....
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Old 07-15-2016, 10:33 PM   #10
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Mr Rockford. Do you recall if this ground is on the driver side or passenger side of the TT?
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