Mercedes 500 SEL No dash lights

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Rick - 14 Feb 2007 00:48 GMT

1984 Mercedes 500 SEL Ok. I have checked these forums and 99% of the
time it seems to be the rheostat. I removed it and made a jumper wire,
so that is completely out of the picture. All the bulbs are good, and
I replaced every single fuse under the hood with new ones, and i still
have no dash lights. Could it be the radio, the car was sold to me
with a aftermarket SONY AM/FM cassete deck, maybe the installer
messed up? Which wire would be for illumination? Please help, this is
one annoying problem.

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jimcollins123 - 14 Feb 2007 08:42 GMT

> 1984 Mercedes 500 SEL Ok. I have checked these forums and 99% of the
> time it seems to be the rheostat. I removed it and made a jumper wire,
[quoted text clipped - 4 lines]
> messed up? Which wire would be for illumination? Please help, this is
> one annoying problem.

I had similar situation and it turned out that the number plate bulbs
were faulty/shorting. They were replaced and it work fine
Jim

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Richard Sexton - 14 Feb 2007 16:45 GMT

>1984 Mercedes 500 SEL Ok. I have checked these forums and 99% of the
>time it seems to be the rheostat. I removed it and made a jumper wire,

Measure the voltage at the jumper wire.

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Rick - 18 Feb 2007 17:37 GMT

I found the problem. This is unbeliveable. On the circuit board with
the rheostat on it, the wire that is embedded in the circuit board was
burnt and had split (like a blown fuse). I made another jumper wire to
complete the circuit, and I have lights now. Thanks alot everyone

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