I am currently wiring up the wiper motor on my harness. My Junior originally came with a 3-wire motor, but alfaholics sent me a 4-wire motor as a replacement a while back. Two of the three original switches on the left hand side of the 1750 dash are worn out, so my plan right now is to add some generic flat shaft toggle switches to replace all 3 (for now). I understand that the park function of the 4 wire motor is a bit difficult to get functioning on a generic off/on/on switch (with the original switch having a complex wiring setup), so my plan is to remove the dash board light switch (auto on with ignition from now on), and add two switches for the wipers. i am hoping to add an on/on switch as a power switch for the wipers (park connected to the "off" position of this on/on switch), and a separate switch for the two speeds. Will this work? what are the different color wires from the wiper motor exactly? ground/slow/fast/park? and which is which?