If you’ve installed an aftermarket stereo system, fog lamps or halogen headlamps in your early (1977 and older) Fiat, you may have realized that you need a little more power to make those new additions work properly. The 1977 and later Fiats came with an internally-regulated alternator that produced 65 amps, which is a good bump in power compared to the earlier 45 to 55 amp models. The early cars can be converted over to the later-style alternator, which will give you the power you need to run those additional electronic devices. With a little expert advice from IAP, you can even install it yourself. Safety is essential, so be sure to disconnect the battery before beginning to work on your alternator. The 65 amp (1977 and later) Fiat alternators are internally-regulated and have two connections: one for power, which goes to the 6mm stud; and the other, which is for the charge light and has a male connector.  After you've removed the old alternator and bolted in the new one, connect the black power wires to the 6mm stud on the back of the alternator; then connect the yellow or yellow/red to the male terminal. Leave the gray wire disconnected, since it's no longer needed. When doing this conversion, you don't need the relay, so you'll simply bypass it. For the light to work properly, disconnect wires 85 (yellow or yellow/red) and wire 30 (violet/white) and connect them together. Make sure to start your car and check the voltage output. It should be a minimum of 13.5 volts. You may have to bring the RPM above idle for this reading. All that's left to do is crank up the stereo and hit the road! To receive core credit, core must be late style alternator. | 
