Just returned home from a rainy 3 day trip and had an odd thing happen during the trip. Prior to this trip I attached a rear view camera to my Tab and used the running light wires for power. Worked fine before the trip but about 30 minutes in I noticed that the camera showed "no signal". When I got to the campground I saw that my running lights were not working either. My first thought was a loose connection but when I unplugged the 7 pin and plugged it back in, the running lights and camera came back on. That happened a few times while I was camping. I plugged in the 7 pin to check things and lights/camera didn't work. Then they did. No signal on the way home but when I drove into my driveway, the camera was working again and so were the running lights. The brake lights, backup lights, signals, etc. all work fine. Never a problem with those. It sounds to me like the 7 pin may be the problem since unplugging and plugging it back in sometimes corrected it temporarily. Anything else I should be looking for? Is one "pin" of the 7 pin just dedicated to those side running lights? Can I get a 7 pin tester or is something else better? I did crawl under the sofa while camping and checked the connections where I added the camera wires. It all looked good.
2017 Max S - Silver/Red - T@briolet - 2016 Jeep Cherokee - Fredericksburg, TX
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There should also be a set screw or screws holding the harness body onto the plug end and the same at the female receptacle. Check for possible corrosion on the wire ends as well and you can buy some dielectric wiring compound at your local AutoZone store and put some on the ends of the wire and also where the wiring plugs into the vehicle. It's probably something very simple and unfortunately these things seem to pop up after projects like the one you just completed, etc.
But to answer your other question, there is a seven prong tester that is available and can be purchased on Amazon or at your local RV store. I stopped in to Camping World up in Northern Michigan a couple of years ago and they checked my wiring for me, for free.
Good luck!
TV: 2006 Chevy Avalanche LT Z71 aka: WhiteWolf, or 1972 Chevy Custom10 P/U aka: SnarlingWolf
Spokane, Wa.
Eric aka: Lone Wolf