Hi All, It's been a long time since I had regulator problems, but, if I remember correctly, when the thing is shot, you'll notice that when you have a turn signal on, your dash and headlights will flicker in time with the blinker, and also your ammeter guage needle will "wiggle" very noticably in time with blinker, too. Also, the ammeter will show that the system is discharging slightly. If it does all that then I would definitely go for the regulator. When I get confused, I muster up all my car expertise and start throwing parts at it starting with the cheap stuff!:-) Memory being what it is...to the rest of the IML...do you still have to "polarize" the regulator? Dave 67 HAZE GREEN Sedan Covington, Wa.