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Old 10-20-2010, 08:00 PM   #1
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Wiring Probblem

I am trying to wire a 4 wire connector into my rockwood trailer, green to green, brown to brown, white to white, yellow to red. I do not have left turn or brake light. What's wrong?
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Old 10-20-2010, 08:13 PM   #2
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RV's require 7 wire plugs to work. Do a web search for Bargman wiring diagram.
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Old 10-20-2010, 08:41 PM   #3
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Thanks, I have a 7 pin on my vehicle, my girl friend does not.
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Old 10-20-2010, 10:48 PM   #4
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Without the 7 pin plug, wired properly, you WILL NOT HAVE TRAILER BRAKES!!!!!!!! Tow at your own risk, but PLEASE do not risk others.
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Old 10-20-2010, 11:51 PM   #5
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Here is the 7 pin wiring diagram.

PLEASE do not try to tow a trailer that has trailer brakes with a TV without a brake controller. You REALLY do need the assist to stop the camper when you stop the TV. Otherwise the camper will try to pass your tow vehicle when stopping. You will not like the results.
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Old 10-21-2010, 07:00 AM   #6
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Thanks for the responces. The trailer I have is a pop-up and does not have brakes.
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Old 10-21-2010, 08:28 AM   #7
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It appears to be too late now but lots of places sell 7-way to 4-way adapters.

Here's the wiring connections for 4-way to 7-way.
7-way----------4-way-----function
White----------White------Ground
Green----------Brown------Tail Lights
Red------------Yellow------Left Stop/Turn
Brown----------Green------Right Stop/Turn

Be sure to check the trailer wiring because they could have used non-standard colored wiring.
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Old 10-21-2010, 08:52 AM   #8
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Thanks BAMA Rambler. I am trying to hook up a 4 wire harness to the trailer so I can plug it into a 4 wire connector on the tow vehicle. I have the wiring correct, but I don't have the left turn and brake lights.
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Old 10-21-2010, 09:03 AM   #9
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Quote:
Originally Posted by danm1130 View Post
Thanks BAMA Rambler. I am trying to hook up a 4 wire harness to the trailer so I can plug it into a 4 wire connector on the tow vehicle. I have the wiring correct, but I don't have the left turn and brake lights.
The problem could be in the tow vehicle. Does the trailer (as modified) pass the test when powered by a different car?

You could try a test with a 9 volt battery and a snap pigtail from Radio Shack. Touch a lead to the ground and the other to the circuit you want to test. Have a friend watch for a glow at the bulb.

You can use a volt meter to check the car end of the plug.
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Old 10-21-2010, 09:25 AM   #10
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Lou has the answer. Try the RV on a different vehicle then use a volt meter or light testor to test the tow vehicle. Some vehicles have separate fuses for each side.
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