Alternator connection

[exdrocca]

Ok so I'm a bit confused about hooking up the alternator on my swap. I went the carb'd route, so just dealing with the original harness.

I have a 4 pin alternator on the 6.0. I purchased a Holley 4 pin alternator pigtail, because it was advertised among my Amazon purchases, and the reviews said it was helpful with an LS swap. Sold. Anyways, I'm really not sure what wires from the harness to hook up to the pigtail? The old SBC alternator was externally regulated, and has a 2 wire plug into the alternator. I'm not sure if anymore info is needed.