charging system blues

Check again. The black wire at BATT post on alternator should be hot at all times, switch on or off.
I will double check black (charge) wire on back of alt again to see when it gets power-pretty sure it gets hot with key on - fellas don't get frustrated with me - I know a little about a lot & a lot about a little - going to full field alt & see what happens if it doesn't bump up batt volts and my wiring seems to check good it will get alt & reg - this all started at a cruise one eve when a few mopar bums told us headlights seemed dim, ammeter showed system was chg & dischg according to rpm, this indicated to me system was operating as it should, until I chkd batt volts while running & it only showed 12v - not being chgd. before I started checking I really expected to have a wiring problem but so far its looking like alt or reg. if its a bad alt it will getalt & reg if a reg cures it alt will stay. full field will tell the way I understand things