Brake, signal, running lights not working

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New member
Sep 22, 2006
I recently put a hide a hitch on my Pontiac Montana and used  the no splicing T-connector wiring. My van lights all work after my installation. I hooked up the camper to my new Hitch and connected the 7 pin plug to my brand new Flagstaff Popup and none of the campers lights work. The van lights still work. My freind towed the camper home for me and they did work when connected to his truck. Any ideas on what I may have missed on the electrical setup. Maybe a ground?

Gary RV_Wizard

Site Team
Feb 2, 2005
West Palm Beach, FL
Could be a ground, but it could be your T connectors are not making proper contact or even that he wires aren't making contact with the proper terminals on your 7 pin plug.  Have you done this sort of hook-up before?  It's amazingly easy to screw something up - I've done dozens and still make mistakes!

You need to test the voltage at the plug for the various pins. Do you have a voltmeter and know how to use it?
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