Well recently my alternator went out, and i put in a new one, then my crank pulley went flying in the driveway so changed that. But i've got these issues which I'm pretty sure only happened after I changed the alternator.

First when I rev up my headlights get brighter, dash, radio, climate control lights, all brighten.
I tried adding more ground to the block and chassis. No good, but my voltages are a little more steady.

Second my idle is a little rough, I think it's the spark plugs, should I change the coils too?



btw willing to sell 4 gauge wire, about 17ft, for $25 + s/h ( i went retarded with the grounding )

 

sounds like your volt regulator is malfunctioning