trailer light's don't work
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New User
Joined: Jul 2003
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trailer light's don't work
I have 98 ford f150, I went to take my nephew fishin. Hooked up boat and no light's on trailer. Hooked trailer to other vehicle and they worked so it's something with truck. checked fuses in all 3 boxes and none blown. was wondering if there is a fuse link some place else or could it be a relay some where?
Junior User
Joined: Jun 2003
Posts: 86
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From: Kentucky
trailer light's don't work
You need to check and make sure that you are getting electric at the plug. You can get an inexpensive tester at any autoparts store. Get the one that just has a light when there is juice present. If none of them are working I would check my ground first. If some of them are working I would make sure that the lights are wired in the plug to standard. Finally run backwards from the plug with your tester to find the place that you lose connectivity. It is most likely a spot where they are connected or rub against the frame or some other body part. Good Luck!
Thread Starter
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New User
Joined: Jul 2003
Posts: 4
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trailer light's don't work
I have a tester with the light in it, the light goes on when and shows power when grounded to the vehicle but not to the trailer and iam not sure on the voltage it takes to light the light. Checked the fuse box under hood (the little one and no blown fuse) any where.
Junior User
Joined: Jun 2003
Posts: 86
Likes: 0
From: Kentucky
trailer light's don't work
If the light is working when you ground to the vehicle and not the trailer, it is definately your ground. Check the ground wire in the plug and take it off where it is connected to the truck. Wire brush or sand it real well and then reconnect. You should also be getting some grounding properties from your ball. Make sure it is clean and that the cup on the trailer is clean. Once you have a good ground established get some silicone and cover the area that you have sanded, this will keep the moisture out and help to maintain your ground connection.
