Hope someone can assist. I have an 89 RRC 3.5 V8 auto. Tach stopped working after a numpty shorted the instrumentation multi function unit (Part # PRC7209).
Bought a new unit, installed it but no luck. Bought a new tach, still no luck. The vehicle is fitted with a Spitronics system.
The tach...
:banghead: Hi All, On my 1989 RR Classic Auto V8 I have the same rev counter issue mentioned in posts in the forum, does not work, all connections to the W terminal look fine, heat gauge works etc. Alternator is charging to spec. Recently had the motor rebuilt and since then the issue cropped...
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