[Bongo Fury]

Thats a relief, I don't need any transmission problems. But it has started making a "clunk" sound when I put it into drive and reverse that it didn't do before. Oh, well that's another topic.

Anyways, I need to ask a dumb question about checking continuity. Even though I am a computer geek, I have always had trouble with electrical wiring and stuff :-).
I have a multi-meter and double checked that the continuity was working correctly by checking a fuse. And I know I will put one end (red) on each of the 3 connections in the speedometer sensor harness, but where should I connect the Black wire on the multi-meter?

Do I need to extend it to someplace on the fuse box or do I still need to tear out the dash to get to the speedometer (which I would probably have to do anyways if it tested negative to find out if it is before or after the speedo?)?

Or do I just need to connect the black to the ground connector in the harness and check the other 2 connectors?

Any help would be appreciated.

btw: The speedo sensor I bought was brand new from Pelican Parts. So it should be good.

Thanks again.