7 pin plug for trailer lights

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PG01

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Hello Everyone

I'm new to this forum. I have a 2004 Yukon SLT that is having the exact same problem. I was hoping someone found a solution.
Id take a test lite to your 7 pin.... each pin is labeled, have someone step on brakes as you test the pin then disconnect the harness from behind the 7 pin and check it there.... trailer connections get corroded so check ur ground back there too
 
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blatta1999

blatta1999

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My wiring inside my 7 pin plug was bad. It was in the actual harness. I clipped the wiring and bought the Hopkins 47210 and wired it in. Solved all my issues.
 

04 Yukon SLT

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Id take a test lite to your 7 pin.... each pin is labeled, have someone step on brakes as you test the pin then disconnect the harness from behind the 7 pin and check it there.... trailer connections get corroded so check ur ground back there too

Thank you, I will start testing today and let you know what happens.
 

04 Yukon SLT

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My wiring inside my 7 pin plug was bad. It was in the actual harness. I clipped the wiring and bought the Hopkins 47210 and wired it in. Solved all my issues.

Thank you

I will disconnect the wiring harness and hit it with a test light. I appreciate the advice, this thing is getting frustrating.
 
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blatta1999

blatta1999

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Yea mine was getting very frustrating. That Hopkins harness was the cheapest option to keep all of my lighting controls and it was around 30 bucks at auto zone.
 

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