3 g alternator into 84

Ok my vehicle has an external regulator and the older alternator with 3 inputs on it

I pretty much understand the wiring all i need is a harness from the junkyard(or if you know a good place to get one let me know)

I notice the pulley on the 94-95 mustang alternator is larger then the one on the 84 alternator the 84 has an external fan.. can the pulley from the old alternator be taken off and put on the new one?It looks like its connected right to the fan... if so how do i get it off?


if i leave the pulley on the 94-95 mustang alternator am i going to have problems fitting my belt back on it?

thanks in advance

thnks redfire I called about 10 places around my area (junkyards,dealerships,parts stores) couldnt find anyone with the harness

junkyard wouldnt get it for me and wouldnt let me in to get it due to insurance issues and dealership wanted alot

so how do i use the harness with it? jus cut off the end and hook up the s wire on external regulator plug to the i wire on the alternator plug and the a wire to the a wire on the alternator plug?