Should Trailer Ground Wire Ran to Frame be Sanded Down to Bare Metal

Question

Question:

Having issues with grounding lights on ironton trailer. Does it make a difference if the metal is painted. Someone said I should sand it down.

asked by: Kim O

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Expert Reply:

If the paint is thick it could prevent proper grounding but typically you don't have to sand off down to bare metal. If the trailer is aluminum framed then that would be an issue and would require running a jumper wire back to the main ground of the trailer wiring.

You might try sanding down to bare metal to see if that helps. If you can spray clear coat over the ring terminal after the fact that would be most ideal.

expert reply by: Jameson C

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Answer 1

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Answer 2

Our best option for LED lights to replace your Peterson 130 style lights is the Rectangular LED Trailer Clearance Light, #MCL76AB for amber and #MCL76RB for red. These lights measure 5-13/16 inches long, 2 inches wide, 1-3/16 inches deep, and mounts…

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Answer 3

There is a picture on the product page for light #MCL76RB showing the back of it. If you click on it, it will take the place of the main image. Then you can move the cursor over it to zoom in. I have included that picture here. But the one here…

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Answer 4

What you are describing is normally the result one 1 of 3 issues: First, there could be some corrosion in or on the connectors on the vehicle or trailer side or both. Second there could be a bad ground. Bad grounds can cause all sorts of bizarre…

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Answer 5

It sounds like your issue is definitely coming from a grounding issue. I would start by getting those wires cleaned up and re attached. I would suspect that there is part of that ground coming in contact with the running light circuit causing it to…

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Answer 6

I will be happy to help you find the right LED replacement lights for your horse trailer. Based on the information you have provided the amber LED replacement is #MCL76AB. The red version is #MCL76RB. Another option is to use Peterson lights #M353A…

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Answer 7

A single spare tire mounted in your trailer will not have too much effect on tongue weight but if your application means installing multiple E-Track spare tire holders #RA-16HST then you will want to try to distribute the load evenly if possible. For…

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Answer 8

If both turn signals blinking at the same time is a new problem that has occurred after the harness had worked fine before, there are a couple of possibilities that may be causing the issue. First, the easiest thing to check are the trailer…

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Answer 9

Yes, it's very typical to just use the mounting screws for a trailer light, like the Optronics #MCL76RB, to connect the ground wire to the frame of the trailer. You'll just want to ensure that the screw hole in the frame hasn't been…

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Answer 10

The interior dome light in a trailer will either be powered directly from the trailer battery which means there would be no fuse on the tow vehicle for this or it will be hooked up to the 12 volt battery charge power circuit. If you have the former…

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Answer 11

It sounds like either that is not the ground wire or there is a short to ground somewhere that you will need to track down. First, on the trailer, the one covered pin is the ground so make sure that is the wire you are attaching to a clean and…

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Answer 12

On your 2002 Ford F-250 you will need to connect the Red wire to the Black wire on the brake controller for +12 Volts power and the Light Green wire to the Red Stoplight wire on the brake controller. The Dark Blue wire is connected to the Blue wire…

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Should Trailer Ground Wire Ran to Frame be Sanded Down to Bare Metal

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