3G alt upgrade on an '85?

[90mustangGT]

A friend is ordering a 3G for his '85 Carbed 5.0. The plug and external regulator setup kind of has me confused on how to upgrade it. I've done it a few times on 87+'s but this one is different. Can someone explain it to me a little? I know the sticky, but it doesn't seem to relate to what I'm looking at.

 

[jrichker]

3G install into an 85 or earlier Mustang:

I would recommend the addition of a 2 amp fuse on the Light Green/Red wire that goes to the switched ignition.
I would use a maximum of 125 amp fuse for the output wire that connects to the starter solenoid.

 

[90mustangGT]

Thank you, that so explains things.