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I see no obvious way to do this at the connector..?


You should be able to use a safety pin to "backprobe" the connector. Should be the BLUE wire in the connector, and it's the one on the TOP.

HOWEVER: On the left fender skirt, there are two connectors coming from the engine, on a bracket, just behind the battery. If you look there, you should find a BLUE WIRE with a single "bullet" type push on connector. This is the TACH signal test connector. Put your meter probe in that connector and you should be in business.


C/YA!
Jeff
'88 Trooper
2DR LWB 4ZE1 5SP
bone stock DD