2000 B20 tach wire question
I am going from memory here... but if that male spade is normally capped with a blue wire, then yes, it could be used for a tach output. Do you have another distributor that has a blue tach wire in the plug that you can compare inside ???
I’ll check in my stash to see if I have an old B18 distributor.
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Gotcha. Was going to point out that if the issue is no tach in an obd2b car, with an obd1 ecu/jumper harness, all you need to do is jump the ICM wire to the NEP wire on the obd2 side of your jumper harness. I don’t remember the PIN numbers off the top of my head, but you can find them on the FF Squad, etc diagrams. Most decent quality jumper harnesses already do this but some of the cheap ones skip it.
Gotcha. Was going to point out that if the issue is no tach in an obd2b car, with an obd1 ecu/jumper harness, all you need to do is jump the ICM wire to the NEP wire on the obd2 side of your jumper harness. I don’t remember the PIN numbers off the top of my head, but you can find them on the FF Squad, etc diagrams. Most decent quality jumper harnesses already do this but some of the cheap ones skip it.









