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jefferyjackson 06-05-2011 11:01 AM

Trailor wiring issues
2006 Ram 2500 factory installed 4 pin running lights operate normallywith key off. Have constant reduced voltage with key on 10.5 VDC on both LT and RT/STOP pins. Any know the location of the control relays so I can start trouble shooting. :4-dontknow:

GTyankee 06-05-2011 06:33 PM

I'll see if i can find the wiring site for your vehicle

follow the prompts

brad12kx 06-05-2011 10:30 PM

There is no control relay for that. The drivers are located internally in the TIPM. When the key is on, they send supervisory information, which may look like a voltage. Are the trailer bulbs partly lit??? If they are, you have a TIPM problem. If the bulbs operate normally, then the voltage you are seeing is the supervisory signal. :)

One thing about the advanced electronics in the newer vehicles, it is sometimes difficult to test/trace things, as there is so much more that just on/off voltage. :4-dontknow:

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