Electrical fuse box

1986 MERCEDES BENZ 300SD
368,225 MILES • 3.0L • 6 CYL • TURBO • RWD • AUTOMATIC
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KAINE GAUDERN
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Three of the main 30 amp fuses that control the powered accessories including power windows, power seats, and power windows are not getting the voltage they need to function. I have to lay a wire across all the terminals to draw enough power to adjust seats and mirrors and stuff like that. I was wondering if anyone had any experience and could help diagnose this issue.
May 28, 2016 at 4:54 PM
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STRAILER
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Hello Kaine,

I would start by testing for power with a test light at one or more of the relays in the panel, next check the ignition switch feed because they ha problems with those in this car, here is a diagram of the fuse panel. Here is a diagram and some articles to get you started,

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Let me know what you find

Best, Ken


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May 31, 2016 at 9:17 AM