1999 Isuzu Rodeo Question Rear wiper problems

I took the new motor and hooked it up in a test jig through a 10 amp fuse directly to 12v. Fuse doesn't blow - it runs like a charm. Tried it with the old motor - same result. I noticed that when the washer turns on there is an audible click of a relay within the control unit. No click when I try the wiper. Possibly I fried the wiper relay in both the old and new controller? I have not been able to find a source for a schematic of that controller. Any ideas where I might find one?

Thanks for this. I have this drawing but it doesn't show what's inside the alarm and relay control unit. In any case here's my latest step: After I ran the motor directly from a 12v battery for a few seconds to check it out, I stopped it and checked the internal switches. Neither the "run" nor the "park" switch was made. I then hooked everything back up normally and tried again. The fuse did not blow but the motor did not run when I turned on the wiper switch. Is it possible there is a particular installation sequence that must be made before it works properly? Still baffled.

Thank you for this. I have gone through the procedure as you suggest. As long as the fuse is intact the washer has always worked fine. I took my test light and connected to the yellow/red lead at the input to the controller "wipe on input". I switched the wiper switch on and off 15 or twenty times and it functioned just fine, so the switch and the harness are fine. When I leave the ignition and wiper switch on and check at the motor connector, the lt green/black lead has the 12v from the fuse, but there's no sign of power across the motor input. (Brn/white to lt green/blue) Also, there's no audible click of a relay within the controller like there is when the washer is switched on. I have to conclude that the controller is bad. I'm guessing that the original bad motor fried the original controller and when I installed a new controller the bad motor fried it too. I now have a new motor and I'll have to either repair or get a new controller. I still would like to get a look at the schematic of the controller. Any idea at all where I might find it? Thanks for all your help.