Hi gang, obviously new here and looking to see if anyone knows where in the heck the power lock relay would be on a 1988 F250. My locks were fine, then started just unlocking with the switch now nothing from either side. The switches seem ok although without a schematic I can only guess what wires are doing what. I opened both right and left sides up and they are dry and clean; windows are working flawlessly. Fuses are good. Just trying to chase down all the could-be's.