Buddy of mine was rear ended in his 90 f150 (2wd long bed 5.0). Ever since he has had no power windows or door locks, no radio, no dash lights. There is almost no damage to the truck and the fuses check out. He also sees no loose wires. I am positive it is a ground (from experience) but I cannot go look at the truck for awhile. Any ideas I can shoot his way? Thanks.