I took the wiper motor assembly off and cleaned it up real good. Sprayed the transmission part with Eastwood's Aluma Blast, the motor with a gold from the touch-up aisle, the motor end housing with a different aluminum paint. I repainted the epoxy covering the wires with a brushed on red Rustoleum enamel. Came out good for what it is. If you want perfection, go to Jules as mentioned. Here's a pic of the wiper asssembly about 2 years old now.
Ron