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My 08 3500 is driving me nuts.

 

Has factory brake controller which acts flaky.

 

With trailer attached it sometimes (not always) doesn't recognize the trailer (5th wheel RV) attached. If I "short to ground" the brake voltage pin momentarily it will then always recognize the trailer and work just fine until the next time I turn off the ignition. Then it may, or may not, again recognize the trailer the next time I start the engine.

 

With no trailer attached, just driving empty, it will sometimes give me a "check trailer wiring" alert even though there is no trailer in tow.

 

Have double checked all wiring and connectors --- no loose wires or corrosion --- everything clean and bright.

 

 

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