[StingRay]

A cs with mounts at 6 & 12 o'clock is a bolt in just change your pulley. You need one that has the plug that will connect 12 volts to the field. Some Donor vehicles had idiot lights and will only work with that type of circuit. On our trucks gut all the reg wiring and find the wire from the fuse block that is the power wire for the reg. it has a diode you need to remove. You can then hook it to the alt field. Don't forget with a 100 a alt you must upgrade your wiring to the battery. When you do that the ammeter will no longer function properly. The wire to the battery has a known resistance and our amp gauges read the voltage drop across it. Change the wire to handle 100 a and the voltage drop is much less. The gauge no longer reads. You could add a shunt of equal resistance to the original wire if you coul find or make one.
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