The non insulated field is just that, grounded. For your application that is correct! The insulated one is the one you plug the voltage regulator into. That's a way to convert a two field alternator to work in place of the correct single field alternator, so your good! That mod will not shorten or adversely affect the longevity of the alternator what so ever, actually that is how the correct alternator is wired internally.
As far as the splices, probably a GM mechanic fixed it, as they would call it fixed! The bulkhead connectors & ammeter are weak points on our cars especially when people use heaver amp alternators then our cars wiring harness were designed to support. Amps cause heat at weak points, or bad connections and will burn in time. It wont happen over night, but time is not on a cars side with too large an alternator. Also the bulkhead connector has a propensity to hold moisture and corrode causing anomalies also. My 63 Sport Fury had splices and jumper wires everywhere when I got it. It took the better part of a Saturday afternoon to clean and repair the bulkhead connecters and undo the jumpers the previous owners installed, then I had to re-rap the harness. The person that did that to your car, had more time than sense. Depending on your intended use of the car, if it's a driver and it's working, leave it. Or better yet get a couple rolls of good quality electricians tape and re-rap the exposed wires making the wiring modifications less obvious. If it's going to be a restoration, the ends are available and if you look, non butchered bulkhead connectors are not to hard to come by. O, Ya, get a good schematic for your car before you get started!!
Herb
1956 Plymouth Belvedere 361 4-Sale
1959 Coronet 326 Poly
1961 Belvedere Custom Suburban Wagon 318 Poly
1961 Dodge Dart Pioneer Wagon 318 Poly
1963 Fury 2D/HT 7.0L
1963 Sport Fury Convertible 361
1970 Chrysler 300 Hurst 440
1979 Dodge Aspen R/T Sport Wagon 360
1999 Durango SLT 5.9L
2008 SRT-8 Magnum 6.1L
St. Louis, MO.
-------Original Message-------
Date: 1/6/2012 12:39:53 AM
Subject: Alternator Confusion - Need Advice
So, It looks like I have a 1970+ alternator that has been wired to a
pre 1970 Voltage regulator. Does this setup really work for very
long? Also, the wiring has been cut at the firewall conectors and a
splice of about 8"' has been added for about every wire coming out of
there. What would cause someone to do that? Fixing a massive
short? .. Oh, one last question. On the 1970+ alternator one of the
field screws holding the clip on terminal has an insulating washer and
the other does not. Should they both have one, as in, did I lose one
somehow?
Here's the pics: Thanks.
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