[gmachinz]

Those modules are not compatible with 1972-older wiper motors. I build conversion harness kits for 73-77 trucks using the 78-83 modules/switches but there isnt a good way to adapt them for use on the older trucks. However, there was somebody offering an aftermarket wiper delay kit for the 67-72 trucks tho...might do a search and see what you can dig up.