Wayne_Nosala
Well-Known Member
I recently volunteered to fix the non-working headlights on the CORVA
dumptruck. seemed like a simple task, but 10 hours later no further
progress than I started.
Truck is 2000 GMC C-6500
Symptoms,
No manual Headlight or Running lights.
Daytime driving lights come on when key-on, in gear
Looked for obvious, checked ALL fuses & Breakers
I found relays in glovebox, If I jump-bypass relay, lights work
same for running light relay.
I changed out light switch on dash, has power on red wire, powers yellow wire when switch turned on.
Seems to me the way things act when K/O Then In gear,
Black box under dash seems to control breaking & daytime running lights.
for some reason, Daytime running light function is not letting things kick
back to manual?
I have no manual for component placement & wiring diagram, so flying blind here!
Any GMC talent / Ideas / help... would be greatly appreciated
Wayne Nosala
CORVA/FOJ
Wnosala@aol.com
dumptruck. seemed like a simple task, but 10 hours later no further
progress than I started.
Truck is 2000 GMC C-6500
Symptoms,
No manual Headlight or Running lights.
Daytime driving lights come on when key-on, in gear
Looked for obvious, checked ALL fuses & Breakers
I found relays in glovebox, If I jump-bypass relay, lights work
same for running light relay.
I changed out light switch on dash, has power on red wire, powers yellow wire when switch turned on.
Seems to me the way things act when K/O Then In gear,
Black box under dash seems to control breaking & daytime running lights.
for some reason, Daytime running light function is not letting things kick
back to manual?
I have no manual for component placement & wiring diagram, so flying blind here!
Any GMC talent / Ideas / help... would be greatly appreciated
Wayne Nosala
CORVA/FOJ
Wnosala@aol.com