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'90 740 speedo circuitry? 700 1990

Firstly, thanks a lot to Brickboard user TONY H - who helped me learn how to tune my car this weekend...I feel like such a grown up after getting nicely greased up under the hood of my car!

The one issue we couldn't figure out - my odometer is very moody - it works when it wants to - usually if the car has been running for over an hour or so. Tony looked under the rear axle at the circuitry for the speedo, and he feels it's definitely been tampered with - he saw aftermarket tape etc under there.

Neither of us have any experience working on 700s....

What should I be looking for/at when I'm examining the wiring under the rear axle? I have a Chilton manual (if that helps for reference). I would like to fix the odometer issue once and for all.

Thanks!






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