89 motor swap, key wont kill engine after

[rentalsquid22]

I put an older motor in my 89 blazer and the original alternator only had two wires coming off it and the motor i just put in it has three or 4, the motor wont turn off unless i unplug the alternator, does anyone know what wires i need to have going to it and what ones i dont is there supposed to be a ground on it?

 

[Blue85]

I can point you to the information I've posted before. I don't know if what you have is covered or not. https://ck5.com/forums/threads/alternator-voltage-fluctuation.340096/#post-4079031

 

[500$k5]

Post up a pic of the alternator you have, and what wires you have attached to it.

 

[fourwheelerjeff]

I put an older motor in my 89 blazer and the original alternator only had two wires coming off it and the motor i just put in it has three or 4, the motor wont turn off unless i unplug the alternator, does anyone know what wires i need to have going to it and what ones i dont is there supposed to be a ground on it?

why not use the original accessories and belt drive?

 

[imiceman44]

I put an older motor in my 89 blazer and the original alternator only had two wires coming off it and the motor i just put in it has three or 4, the motor wont turn off unless i unplug the alternator, does anyone know what wires i need to have going to it and what ones i dont is there supposed to be a ground on it?

I believe there's a conversion pigtail to go from old to new.
Not sure on backwards