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i have a 92 f150 inline 6 i just did a conversion to a 351 it came out of a 97 f250...
so i replaced the engine compartment harness and wiper motor everything works fine
but the wipers dont ..the old wiper motor was a 2 plug but now its a1 pug .
the old one was workin so it cant be nothing electrical inside and i already test the old motor on by other truck
Are you getting power to wiper motor? Did you check wiper fuse? Take a test light check for power on wire or plugin connector .Also check make sure wiper motor is grounded good .
I used my powerprobe to check the back of the plug and I have ground to both black wires and positive to the green... all of my fuses are good and I hear a clicking noise behind my glovebox
On the Wire harness that plugs onto your wiper motor how many wires do you have .On my 95 F250 I have 6 wires .Does your truck have intermitten wipers?Maybe you should put your old wiper motor back on and rewire it .