Start with the obvious. Disconnect the battery and remove the old alternator. Then mount the new alternator. You need to get the two connectors that fit the new alternator (see pic).
The orange and green wires that were removed from the old alt will not be used. The heavy black wire will connect to the insulated stud of the new alt. The yellow wire from the 3-wire connector will also connect to the same insulated stud that the heavy black wire is connected to. The white/black wire will connect to the single connector that plugs into the alt. This is the stator terminal. The green/red wire from the 3-wire connector will connect to the blue wire that is on the old firewall mounted voltage regulator at the "I" terminal. Cut this blue wire at the old regulator connector and extend it with a piece of new wire, and connect it to the green/red wire of the new 3-wire alt connector. This is the wire for the "GEN" light in the tach. Disconnect the connector from the old voltage regulator and cap it. The yellow wire at this connector will still be hot.
More info to follow shortly.
John
Alternator connectors.
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