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Old 09-14-2012, 01:08 PM   #1
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7 pin plug to 4 pin plug on tow

To start, I am not mechanically inclined. My coach has a 7 pin receptacle to connect the RV to the tow vehicle which has a 4 pin connector. I purchased a cord from Camping world which had 7 pin on both sides. A friend cut one end off an connected the needed 4 pin on the vehicle side. The problem is that in doing so he connected the right and left turn signals backwards, So when I turn the signals to turn left my coach is signaling properly but the tow vehicle is signaling right, the opposite. Their are only four wires on the tow side but I can't figure out which two to swap.

Any help will be appreciated
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Old 09-14-2012, 01:32 PM   #2
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Here's a standard color-code for four pin connections- just swap the position of the appropriate wires on the pigtail your friend cobbled together.

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Old 09-14-2012, 01:36 PM   #3
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Quote:
Originally Posted by Francesca View Post
Here's a standard color-code for four pin connections- just swap the position of the appropriate wires on the pigtail your friend cobbled together.

Nicely done, Francesca.
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Old 09-14-2012, 01:40 PM   #4
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7-pin connector is for a brake controller... do you have brakes on the trailer?

Also, they make really easy adapters to go from 4 to 7 pin and vise-versa..
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Old 09-14-2012, 02:53 PM   #5
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Originally Posted by Midniteoyl View Post
7-pin connector is for a brake controller... do you have brakes on the trailer?
I could be wrong, but I think the O.P. is talking about a vehicle being towed by an RV...
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Old 09-14-2012, 04:13 PM   #6
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And in the next bin at Camping World was a 7 pin to 4 pin connector.
WalMart has them for less than $10.
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Old 09-14-2012, 08:16 PM   #7
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Everything hinges on how the toad is wired and non of us know the correct pins. Go to an RV trailer installer and they will be able to get it right in about 5 min.

fred
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