New problem

[bob8619]

This will probably get moved to electrical, I'm posting here because not many people frequent the electrical area so I figured I'll get more responses here.

72 c10 350


Suddenly tonight the truck started running rough and I could tell there was a power problem because when I had the blinker on my tach was ticking with the blinker. I got home and put a volt meter to the battery and 14.3volts while running. I then put it in gear and it drops to about 14.1 and as soon as I turn on the lights, it'll drop to low to mid 13s. SOmetimes it'll sit there idling rough other times it'll stall. After many attempts trying it with different things on or off, it seems to ONLY happen when the actual head lights are on, and in gear.


Any starting points?