SL-Class (R129) 1990-2002: SL 280, SL 300, SL 320, SL 500, SL 600, SL 60 AMG

SL/R129: Calling all brains, low voltage in fuses 12+13 no idea why (99 Sl600)

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Old 03-28-2023, 07:10 PM
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1999 SL600
Calling all brains, low voltage in fuses 12+13 no idea why (99 Sl600)

Hello, I've never had working wipers or been able to flash my brights, any attempt to do so usually made my turn signals go on the fritz, I have replaced the combination relay, convenience relay, turn signal stalk etc, and it hasn't made a difference. Searching for the issue revealed that I have low voltage to fuses 12 and 13 and the M1 fuse. But I have no idea why.

If I jumper the fuse from a fully powered fuse the brights flash but I still can't work the wipers. Any idea why? I'm kinda at a loss.
Old 03-29-2023, 01:57 AM
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SL63 (R230), CL500 (C215), SL55 (R129), CE300-24 Cabrio (A124)
Hi, xxx
Bad ground connection? Bad GM? I would check the circuit diagrams..
Cheers, Frank
Old 03-29-2023, 12:27 PM
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Thanks for the reply! I did eventually crack it, thankfully I have a 500 to check parts on and drive on worse weather days. I found an old thread on another site that said it might be the ignition switch so I swapped the ignition switch from the 600 into the 500 and the 500 now has those same problems! installed the switch into the 600 and am going to put it all back together today.
Old 03-30-2023, 03:54 AM
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thanks for the feedback.
Old 06-05-2023, 02:47 PM
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Carbon parts

Hey I saw your comment on a r129 post inquiring about carbon fenders. I can make a custom aet for you. Do you have instagram? You can check out my page and we can talk there. @benzhawaii
Old 06-05-2023, 02:50 PM
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Sorry I'm on my old phone that doesn't have my email for my mbworld account, I can comment here soon on my normal account, I just saw your comment and wanted to get in touch while I had the free time. I'll be here as well if you dont have instagram and had any questions. You can still check out my page www.instagram.com/benzhawaii

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