Mine are, oddly, both bad. Power to switch, nothing after. Anyone happen to know the part number from an electronics source or at least the exact type? I need to order some stuff, capacitors and what not, but have been putting it off since I can not ID these things.

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1991 560 SEL / 185k miles
1992 750il / 17k miles - project car

Can you post a pic?

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

It may be bad contact not the microswitch. Have you tried cleaning the contacts on the visor clip and the tip of the visor? That is where it get +12V. The ground is from the screws which hold the visor in place, chean that too. Or check the fuse.

Easy way to check is to put 12V on the visor and flip the mirror cover.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

ah-kay. I did all that and more. I removed the covers, took them apart and re-sodlered them. ALL the solder joints where cracked on both. I really thought that was the issues until I put them back in. I never put the mirrors back in so I could continue testing. I checked power and the outputs of the switch itself the last time.

Odd that BOTH would go back. I thought it was originally a related issue to my non-functiong memory seating or some other common power issue.

Anyway, I will see if I can grab a pic.

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1991 560 SEL / 185k miles
1992 750il / 17k miles - project car

You can buy microswitches at radio shack for about $2.69. I did. I can't find the part number right now, but I will look. The switch is not identical, but it works exactly the same. too easy.