#1 clean ALL terminals/connections in the electrical system including the ground paths & yes toss the problematic electromechanical reg & get a solid state unit.THEN if you need one of the dual field terminal 70's alts then upgrade & an option, several of the non Mopar alts are far better in function. You want the ammeter needle to be close to 12 O'clock at all times which tells you the system is in equilibrium, that the alt is supplying what the system needs plus just keeping the battery topped off. highest amp OE alt (other than the Leece Neville big beast which is good but is heavy & requires its own specific bracketry) is a 78 amp alt for an 85 M body & it needs a slight fore/aft adjustment (stator in the middle of the alt cases is thin compared to the earlier wide ones) & it might need the common chebby swing arm bracket, a chrome one is sold commonly for $10. but some of those alts (not the chebby ones ) may produce higher total amps but possibly less at lower RPM's which hurts you even more (just for a daily driver) unless you are relaying in alot of extra draws like stereos/lights etc which needs the extra capacity.