ClassicCar

You will need to connect the wire from the new alternator to a modern high capacity diode capable of handling the output of the alternator. Any auto electrician should be able to supply you one with a suitable heat sink attached. For positive ground you will have connect the cathode to the alternator, and the anode to the original "Bat" wire. To get the "A" light to work you will then need to get a relay with a normally closed set of points with the common terminal connected to ground, and the normally closed connected to the A light wire, and the coil terminal of the relay connected to the cathode as well. When the ignition is turned on the light will ground through the n/c points, and as the alternator starts charging the points will open and the light will go out. There are other ways of doing it, but this is the simplest. If you would like a circuit diagram of this, email me direct. Omit the HET from this address before you email HETgeoffclark@xtra.co.nz
Geoff

If you are going to a 1 wire GM alternator, just hook a 10 gauge wire from battery connection on solenoid, find the wire on the voltage regulator that turns on the GEN light on dash and hook it to the white wire on the double plug that also has a red wire that goes to the back terminal where the 10 gauge wire connects. It's a simple job and remove regulator and all wires. Walt.