Your generator may just need to be polarized again. There was a discussion about this just the other day. Hotrod Lincoln gave very good instructions on how to polarize the generator, how to determine whether your voltage regulator is working or not, etc., etc.

This is the thread:
http://www.stovebolt.com/bboard/cgi-bin//ultimatebb.cgi?ubb=get_topic;f=3;t=001154#000010

Changing to an alternator is not that difficult, but you first need to decide if you want to convert to 12 volts or stay with 6 volts. If your truck was originally 6 volts and you want to stay with 6 volts, you're probably better off getting the generating system working properly. 6 volt alternators are very expensive.

If you want to convert to 12 volts, then you'll need to decide what to do about your 6 volt gauges, and you'll need to change all your bulbs to 12 volts. You can buy brackets for mounting "standard" GM alternators that you can buy at any parts store, and you need to get a conversion kit for the wiring to the alternator (or make one yourself.) Fifth Avenue sells the conversion kits.

I converted mine to a 12 volt alternator. It wasn't hard at all.


Paul Schmehl CI 6
geek@stovebolt.com
Stovebolt Staff: Geek