nope not a chebby system,early a's have one wire for the main connection and one for the field wire so that's two.still a simple system and as was stated it's been functioning for four decades no need to change it just find the problem and it'll be good for four more decades :cheers: I promise! we could use a pic of the alternator that would be good! and a pic of the voltage regulator...and a pic of the wiring running down the valve cover.....and get a test light,I'll draw you a diagram on the pic's or one of the other members can show you where to touch with the test light,or voltmeter,if you can have the alternator tested at "idiotzone"would be good and maybe the regulator would be also helpful...the wiring gets kind of brittle up towards the front of the engine and could be broken