headlight problems with 2001 gmc t7500. when lights are off the dash is showing that there on and when i turn them on i only have one light and dash light goes out. but using beams there all on. I am having trouble finding wiring diagram. any help would be great. I am hoping for link to find wiring diagram or any info if available. Thank you.
Dec 5, 2011 at 11:54 PM