It starts but no accessories work?

1987 MERCEDES BENZ 300E

158,000 MILES • 3.0L

SFFINN1965

MEMBER
2 POSTS

It starts fine, but it has no turn/flashers, wipers/washer, power seats or windows or sunroof, no gauges, no radio or locks, but it runs great? I replaced all fuses no better? I see no loose wires at the starter or anywhere. Please help?

Sep 2, 2024 at 5:38 PM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

This sounds like you have an ignition switch that is bad. But to be sure here is a guide to help you test for power, remove the ignition switch and test the PK/RED, PK/GRN and PK/YL wires when the ignition switch is on, here are the wiring diagrams so you can see how the system works. Check out the images (below). Please let us know what happens.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
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Sep 3, 2024 at 8:30 AM

SFFINN1965

MEMBER
2 POSTS

Thank you so much, ill check it out at first light.

Sep 3, 2024 at 9:59 PM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

Sounds good, I am interested to see what you find.

Sep 4, 2024 at 10:12 AM