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2INSANE
11-07-2020, 05:50
Is this prong on the 6.5 isolated ground or a positive terminal?

https://hosting.photobucket.com/images/m491/chrisjhufstetler/001_IMG_3465.HEIC (https://app.photobucket.com/u/chrisjhufstetler/a/60e7626e-0070-4a62-9dd6-2828a7e8a9a9/p/20f10e85-f31f-48c2-90ab-5561571c0d55)
DmaxMaverick
11-07-2020, 08:00
Positive charge lug off the rectifier. The alternator is grounded through the housing.
2INSANE
11-07-2020, 09:32
Positive charge lug off the rectifier. The alternator is grounded through the housing.

Ok thanks! Does the 6.5 tach reading come from the alternator?
DmaxMaverick
11-07-2020, 11:25
Yes. It also makes the pulley size (crank and alt.) critical to accuracy.
2INSANE
11-07-2020, 12:30
Yes. It also makes the pulley size (crank and alt.) critical to accuracy.

Ok. The 4 wires that are on the connector, what do they do? Color codes?
DmaxMaverick
11-07-2020, 20:16
I can't help without a specific application and a diagram, and I have neither. Typically, the alternators are either 2 or 4 wire connectors (4 place, with only 2 used, in the 2-wire). One is the field exciter, the others are for voltage regulation and the tach (if the correct application). I don't know the colors, but I bet google does.