I believe Bear is right. I know they did start putting the horn relay inside the cab somewhere in that era. It just hangs on the wires by the fuse block. They did have some type of TSC in the early years of emission controls. The connectors on that one unit look like horn relay connectors.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
In the Gallery Forum