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Old 01-07-2019, 07:59 PM   #1
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Join Date: Oct 2017
Default Rear Fog Lamp Switch Replacement


I was recently trying to get my rear fog lamps to work on my 89 240 sedan.
I tried swapping the rocker switch first as I had an extra one and no luck.
I bought new bulbs to swap in to see if that is the issue.

If I wanted to replace the switch with one of those universal switches at O'Reilly's what amp should I get? Would I make sure it is greater than the amp on the bulb?

Thanks for the help.
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Old 01-07-2019, 08:11 PM   #2
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Join Date: Jun 2002
Location: S NJ, a suburb of Phila.

Get a test lamp and start probing the plastic vinly circuit board to make sure voltage and current are getting to the bulb locaations. There is a ground screw for the light to use as ground for the test light. Then check that the power is present on the vinyl at the bulb socket locations.

The swtiches rarely fail. It's the circuit board on the tailights that is the first place to check any rear bulb failure.

Last edited by dl242gt; 01-07-2019 at 08:11 PM.. Reason: spelling
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Old 01-08-2019, 12:21 AM   #3
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Thanks! I'll try that out this weekend after the rain clears up.
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