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Posts: 386
| Hi all,
I just traded in my jeep for a ford explorer. The Jeep had a flat 4-pin connector, the ford has the large round 7-pin connector. I purchased a 7 to 5 pin adaptor (the 5th is for reverse that I don't have on my trailer, so that one is unused). The brake lights work, the turn signals work, but when I turn on the truck lights, the side and back lights do not light up for night driving. I put a tester on and it shows the same thing -- turn signals and break lights work, but not the night lights when truck lights are turned on. As such, as it stands now, I cannot drive when it's dark. It's not the trailer itself--everything works when I hook them up to another vehicle using the straight 4-pin connector.
Any suggestions would be greatly appreciated! |
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Posts: 1760
Location: new richmond, wi. & isle, mn | Check all your fuses. Most newer vehicles capable of towing have individual fuses for each separate circuits of the plug . |
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Posts: 386
| I'll do that, but it's not "newer" -- it's a 2002 that is "new" to me. Thanks for your feedback, any other suggestions would be greatly appreciated. My world is incomplete knowing that night fishing is out of my capacities.
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| sent you a PM......you can give me a call.
Mike |
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Posts: 91
| Make sure you have a proper ground. |
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Posts: 1096
Location: Hayward, WI | Might try a new adapter, I have seen them bad right out of the box. Otherwise need to track down where the issue in the truck, from the fuse, to the harness, to connections, to the 7 way receptacle. |
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Posts: 131
Location: Lake St. Clair | I had the same problem and it was a blown fuse. That was in a 2013 F-250 powerstroke. I bet thats your problem... |
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Posts: 3508
Location: Elk River, Minnesota | Hiya,
I would agree on checking the truck fuses. Many vehicles have a fuse just for the trailer running lights. This is so not all of the light functions aren't out and can still be used during daylight hours.
If a ground was bad, then there would be issues of the signal lights not working as well as all lights are usually grounded to the trailer frame. This scenario indicates a fuse.
Now...if you find the fuse is bad, you replace it and the fuse goes out again, then that is a sign of chaffing happening on your running light wires somewhere, creating a short in the system. I had this happen on an old shoreland'r trailer and kept blowing fuses in the truck. Ended up pulling lines on the trailer to find the problem and fix it. Not the most fun process, but it is doable...
Steve |
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Posts: 5874
| The F150's have separate fuses for the trailer. That fuse box should be inside the hood.
Ground is good, or you would have problems with the brakes and blinkers.
Edited by Shep 5/12/2013 6:55 PM
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Posts: 386
| Checked the two fuses under the steering wheel designated for the trailer -- one for "trailer tow relay" and one for "neutral tow switch." Both looked to be in tact. Mike, expect a call, thanks! Anyone else, WHAT'S NEXT?
THANKS ALL FOR YOUR HELP THUS FAR! |
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Posts: 1327
Location: E. Tenn | I have exactly the same problem with a '10 Tacoma.. The brake lights and flashers/turn signals work fine. The running lights work in the shop and on a different vehicle, but not on the Tacoma. Also tried a couple of different adapters, and no luck. Checked the fuses and they're fine too. |
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Posts: 386
| Found the problem -- there are two fuse boxes II'm a truck newbie dumbass) and it was the box under the hood. Ol' #27, responsible for hitch lights, out! Replaced, bingo! Thanks everyone. My world is again complete and I can rest easy tonight.
Fish on! |
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Help with trailer connections