Hello, Looking for insight to a tachometer problem on a '83 300TD. It quit working yesterday. I already checked fuses-ok, changed the transducer out with one that works on another car- didnt fix- pulled cluster to verify proper connection- no problems there- could it possibly be the pick up at the crankshaft?? How easy/difficult is it to change?? Is there a way to check it? any insight would be appreciated. Thanks! Dave