93-94's are different. They are most undoubtedly not pre-wired. The only thing you can hope for is that the Cabin is pre-wired - check behind the driver side panel, underneath the headlight switch for a 4 wire pink/black connector. If you have it, then you're at least pre-wired in the cab.
But the engine compartment will definitely not be pre-wired. You can look for the two, two pin connectors hanging down by the headlights, but I wouldn't hold my breath. BTW, I just swapped OEM wiring into my 93, it's not hard but you have to remove the factory harness and find a 93-94 harness with foggers (which is pretty much non-existent in these parts, felt like I struck the lottery when I found mine) and swap over the fuse box wiring to get the relay connectors.