hello every one.new to the site. well my grandfather had a old suburban and trailer. both have been sitting for years.we had just started fixing the 2 of them up for me . not sure of the year think its a 83 but could be older. this bad boy is fully loaded 454, tow pack every thing for long trips. well grandpa passed away so i know how he felt about his truck so i am going to rebuild her sort of a memorial to THE OLD MAN. basically that it is it so if anyone has wiring diagrams manuals or anything else that would help i would appretiate it. i will know the exact year today. thanks all