2 Speed Lucas Wiper Motor Wiring. So I bought a new MGB Lucas 14W type 2-speed wiper motor complete with rubber mount. WIPER MOTOR WIRING Dash-mounted Wiper Switch 12 Volt2 speed The wiper motor is a DC permanent magnet field design.
If you use the Lucas 35927 switch that was meant for 2 speed operation you could use your wiring as it is now. When you use your finger or even the actual circuit along with your eyes it may be easy to mistrace the circuit. Additionally the low-speed coil is typically supplied by a red wire while the high-speed coil is fed by a black wire.
That would limit you to the single low speed but it would allow for motor parking and would require no effort.
The isolating switch used below is a simple 2 pole switch in which both output pins are live in the fast position. In many instances the low- and high-speed coils share an external wire. On a two speed-motor the Field coil has the same winding as a single-speed motor AND an over-wind of ten turns of resistance wire. Check for continuity to ground at the terminal with the black wire.
