S-Class (W140) 1991-1999: 300 SD, S 350TD, 300 SE 2.8, S280, 300 SE 3.2, 300 SEL 3.2, S320, S320L, 400 SE, S420, 400 SEL, S420L, 500 SE, S500, 500 SEL, S500L, 600 SE, S600, 600 SEL, S600L, 500 SEC, 600 SEC

Odometer wiring

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Old Oct 24, 2022 | 07:36 PM
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Odometer wiring

I have a problem with the odometer in a 92 W140 and it isn't the gear. It's fine.

Tested continuity on the motor that drives the odometer (the 2 pins that connect it to the board) and there wasn't any !!!!.....but it is the same on 2 other speedometer clusters I have so it isn't that. Gotta be on the board somewhere and I'm hoping this isn't a unique issue and someone can show me which transistor or resistor that needs to be replaced....I hope

If nothing else maybe there is a wiring diagram out there somewhere.

Thanks for taking the time to read this and hopefully reply with the solution.
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