I too have an alternator off of a 90 model pickup on my duster. Works great. I used a alternator fusible link for an 06 truck on the large battery stud going to the battery. The other 2 small studs are the field wires and hook them up as you would a normal chrysler alternator. Put the blue wire to one and the green to the other. using your existing voltage regulator. Just make sure to the alternator is grounded good to the block and it should work fine. What ever you do dont use the factory amp gauge for battery power.