Can anyone help with wiring on new internally regulated alternator installation on 63 Olds 88. Wiring converstion diagrams that I have found show just hooking up the new field to hot, but what do I do with the other one. Old alt. had a purple wire going to a relay, a red wire going to hot on horn relay and a blue wire that went to field on voltage regulator. Voltage regulator also has a green wire, and I don't know where it goes.

 

I did exactly this conversion on my 62 F-85. First, remove the old generator and the regulator and all the wires between. Locate the wire from the GEN light to the old regulator and connect that wire to the #1 terminal on the alternator (the alternator FIELD terminal). Connect the threaded BATT terminal on the new alternator to the post on the horn relay using a wire gauge sufficiently large to carry the amperage of the new alternator. Finally, connect the #2 terminal on the alternator (the SENSE terminal) to the horn relay as well.

That's it.

 

I think he had an early style alternator set up and not a generator. The lite wire will be at the relay where the purple wire went. I think it will be brown. Hook it up as Joe said and it should work like a charm.

 

Thanks Stellar. You are right, I have an early style altenator. I don't have diagram of the instrument cluster, but from what you are saying the purple wire from the alt. picks up the relay it is attached to and goes to the light on the inst. panel. So that wire should to to the new alt. on the "not field" connection? Thanks again.

 

Sorry for the confusion, but the connections are still the same (assuming the new alternator is a 10/12 SI style). Wire from the GEN light goes to terminal #1, which is the field terminal on the SI-series. Heavy wire from threaded BATT post to horn relay. Sense wire from terminal #2 to horn relay also. No additional wires or relays are required.

 

Not familiar with that year but might also check the gauge of the wire from the horn relay to battery as well.

 

Joe's info is correct. I just wanted to say where the lite wire can be found on that early 63 setup. Connect just as Joe said. Just to avoid another possible mistake, use the terminal designation 1 and 2. Do not use the letters under the numbers on the alt that read R and F As the F is located under the #2 terminal and some people confuse it for the field which is #1 as Joe said.