I have no idea what you mean. If you are looking for a bed assembly diagram I could move this to the beds forum. If you are looking for a wiring diagram I could move it to Electrical Bay. Usually schematic refers to wiring but the only wiring to the bed is your tail lights.

"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.