1995 GMC Seirra ....evrything was working fine up until a
few days ago. Turn signals work fine until I turn on the
headlights then driverside won't blink and the signal lamp
buzzes. Also the panel/radio lights blink on and off with
blinker. Hazards only work with headlamps off. Any ideas ?
Could be a bad ground connection somewhere. Current
drawn by headlights across bad connections causes
ground voltage rise , starving other electrical parts.
1.) Remove, clean and reinstall battery cables.
2.) Remove, clean and reinstall grounding cable
from battery to engine block.
3.) Tighten ground connections in dash panel.
Wendy & John.