I do accident investigation and I was hoping someone here could help me with the lightling layout on an 02 Silverado 1500. The truck was hit on the front end and I need to know which lights do what. I know that the top headlamp assembly has two single filament bulbs and the bottom assembly has a small single filament bulb (that I assume is the turn signal) and two other dual filament bulbs. I need to know what each of these bulbs do (i.e. low beam, high beam, parking, fog, etc...)

 

upper lens: inner bulb is high beam, outer bulb is low beam
lower lens: inner bulb is dtrl and outer is signal

there may be a peanut sized marker bulb in there too

fog lamps would be build into the lower dam on the bumper