I have a 90 RR that has had some tach problems. I replaced the alternator a few months ago and it was working intermittently, not fully reliable and would jump occasionally but now will not register anything. I am sure that i could test the current coming from the alternator to the tach but what voltage ranges should i expect to see? I am assuming that the tach has failed but would like to test it before i go on the search for a replacement.
thanks in advance for any help
CR