big volts

Thats not possible!
-What I mean is one of you is in error. If the alternator truly is good then a full field test will force the alternator to max output; whether you do it, or someone in town does it.So who are you gonna trust?Did they do a load test on it or just a voltage test?
-If you full field it, and the alt goes to max output, then whatever voltage comes out on that stud, should be seen throughout that circuit, anywhere between the alt and the battery, within about 5 %.
-The test points are; alt stud, port "P", #1 splice, ammeter(both sides), "J"port, Fuseable link, stud"B" on the starter relay, battery positive, ig sw feed, ig.run, port"N", VR blue, B-resistor feed blue. That same voltage should show up on the other feeds too, namely; headlamp sw, fuse box, and horn relay.

Have you pulled the wiring diagram up yet?