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Old 05-31-2016, 12:36 AM   #1
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Brand: Still Looking
State: Illinois
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THOR #1724
7 way plug

i just wired a 7 way plug to my 2010 4 winds class c i have power at plug but when i hook up to my tow dolly i have nothing . what did i forget to wire
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Old 05-31-2016, 01:19 AM   #2
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Brand: Thor Motor Coach
Model: 2015 Vegas 24.1
State: Pennsylvania
Posts: 1,304
THOR #2601
What do you mean by nothing? Wasn't the plug wired for lights and brake lights by the factory? Did you have to wire the whole 7-way? Nothing wired by factory? Did you wire the ground pin in the 7-way? Did you wire in a brake controller and did you run the blue brake signal from the controller to pin 4 on the 7-way?
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Old 05-31-2016, 02:37 AM   #3
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THOR #1724
motor home did not have 7 way plug or brake controller so we added both i ran a whole new blue wire for the controller i have power at the plug when i test with a test light but when i hook up to the tow dolly i have nothing.no lights nothing .but to check tow dolly i hooked up to my p/u and everthing works sow i know its not the dolly
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Old 05-31-2016, 03:40 AM   #4
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Brand: Thor Motor Coach
Model: A.C.E. 30.2
State: Utah
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THOR #2562
Have you used your tester to compare your wiring on the plug you installed on the motorhome to the one on your pickup? I see a lot of people wire them in reverse since they are looking at in reverse when wiring it up. Start with only park lights on and ground to the ground location on your trucks plug then test the same on the motorhome and compare. Ground to the plug not the chassis to make sure the plugs ground is good. Are the locations the same.
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Old 05-31-2016, 11:49 AM   #5
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Model: Axis 24.1
State: Michigan
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THOR #1150
I'd pick up one of these guys 7-Wire Plug Tester (in fact I did). Very helpful.
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