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Thread: Cleaning corrosion on electrical terminals

  1. 13th October 2012, 09:40 AM #1
    Ashes's Avatar
    Ashes
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    Cleaning corrosion on electrical terminals

    I have some LED indicators in my bull bar and found the LH side one not working the other day. Dismantling it I found that the problem appears to be in a white push connector. Taking the plugs apart found quite a build up of the green/white corrosive gunk on the male terminal. Just one out of 3. Some jiggling and the LED works so definately looks like a connector problem.

    I won't be able to pull the plug apart so wondering what is the best way to clean this up (I'm sure it will also be on the female terminal) and preventing it coming back in future.

    Is there a spray/lubricant I can use. I should be able to scrub the male terminal but can't easily get to the female terminal.
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  2. 13th October 2012, 09:58 AM #2
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    CraigE
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    coke or some vinegar or weak acid.
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  3. 13th October 2012, 10:53 AM #3
    superquag
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    Quote Originally Posted by CraigE View Post
    coke or some vinegar or weak acid.
    Yes, be ingenious with the female connector, maybe an electric toothbrush... you can wash it out later and Wife will never know...then lots of clean water, dry out 101% (Most important, as moisture is the biggest problem, apart from un-tinned wire, bad crimping, cheapy connectors...) then water-proof the connectors.

    My suggestion for now would be using 'self-amalgamating' tape. Around $20 for 10 metres.

    Self Amalgamating Tape - 10mt - Jaycar Electronics

    I would imagine BLACKWOODS or any electrical supplier would stock it as well.

    Best fix would be to cut off the connectors, already proved to be unfit for purpose, and properly join the wires, or use a waterproof connector if you think you'll need to unplug them in the near future...

    All electrical problems are caused by 'gaps'. - A gap in the wiring where it should'nt be, or lack of a gap where it should. Worse still is a gap that can't make up its mind, such as LR headlight switches...
    Last edited by superquag; 13th October 2012 at 11:04 AM. Reason: betta wurds
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  4. 13th October 2012, 05:51 PM #4
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    Hit the connectors with some Inox and that cleaned them up pretty well.
    Problem is due to a poor terminal connection so movement in the wire breaks the connection. Taped up as a temporary measure and if that doesn't hold I'll replace the connector with something more solid. The light is non critical as it is basically a 2nd front indicator. These connectors aren't great as I found the other side had worked slightly loose as well and another different light was out.
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