Automotive

Electrical Contact Cleaner ...water got up in my license plate bulb contact

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  • Jun 15th, 2016 9:35 am
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[OP]
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Feb 24, 2007
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Electrical Contact Cleaner ...water got up in my license plate bulb contact

Long story short my cover on one of my rear license plate bulbs fell off, took 3 weeks to order a new one, since then water must have got in and my bulb died (had a little water rust mark on it)

I wanted to get a good contact cleaner to spray up in there before i put another bulb in there

Any suggestions ? Will it be ok to spray something there? Any larger electrical issues that could come of this?

Thanks!
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Isopropyl alcohol.
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Aug 12, 2007
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wmahmud wrote: Long story short my cover on one of my rear license plate bulbs fell off, took 3 weeks to order a new one, since then water must have got in and my bulb died (had a little water rust mark on it)

I wanted to get a good contact cleaner to spray up in there before i put another bulb in there

Any suggestions ? Will it be ok to spray something there? Any larger electrical issues that could come of this?

Thanks!
you're pretty much looking at replacing the whole assembly sooner or later. might as well do it now and get it over with. once you have corrosion started at an electrical contact there is nothing you can do except to replace it. If you replace it later you may have to replace the pigtail connector that connector that connects to the bulb holder as well.
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Oct 26, 2008
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WD-40 (Water Displacer). Too big a job for Switch/Contact cleaner.
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Supahhh wrote: you're pretty much looking at replacing the whole assembly sooner or later. might as well do it now and get it over with. once you have corrosion started at an electrical contact there is nothing you can do except to replace it. If you replace it later you may have to replace the pigtail connector that connector that connects to the bulb holder as well.
Or i could just leave the bulb out no?

Can any problems start from there further into the car?
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I'll post pics tomorrow...its a very tiny bulb and contact where it sits
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Supahhh wrote: you're pretty much looking at replacing the whole assembly sooner or later. might as well do it now and get it over with. once you have corrosion started at an electrical contact there is nothing you can do except to replace it. If you replace it later you may have to replace the pigtail connector that connector that connects to the bulb holder as well.
Usually talking copper not steel.
macnut wrote: WD-40 (Water Displacer). Too big a job for Switch/Contact cleaner.
wd40? not for this sort of thing, that being any possible copper tarnishing, if a coating of dirt on it perhaps might help.

My guess op is that 3 weeks isn't enough time to make any real difference on copper anyway. Replace the bulb and if it works stop worrying about it, buuut if you must, a little contact cleaner won't hurt, try not to get any on cars paint, but if you do clean it off.
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Flat file to remove rust, contact cleaner/brake clean/whatever to remove sanding dust, dielectric grease with bulb.
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wmahmud wrote: Or i could just leave the bulb out no?

Can any problems start from there further into the car?
no it'll be limited to that particular socket and the pigtail connector.
Put in a LED bulb , since the current draw is so small for LED bulbs, I think you might get away with no further damage.
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Dec 23, 2003
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Changing the assembly and checking the wires is the thorough approach.

In terms of contact cleaners, I would get something like this:

http://www.canadiantire.ca/en/pdp/motom ... 1740p.html

https://www.homehardware.ca/en/rec/inde ... R-I8618888

Just make sure it does not have silicone as it is more versatile.
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Mar 12, 2010
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Kasakato wrote: Flat file to remove rust, contact cleaner/brake clean/whatever to remove sanding dust, dielectric grease with bulb.
This is what I would do.
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Mar 13, 2004
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After you clean it up make sure you put dielectric grease on the connector and bulb. This will help keep water/moisture out of there in case it leaks again. I put dielectric grease on all my connectors/bulbs just in case so they are protected.
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