Wiper motor sockets and diagnostics

Lucas Wiper motor connections Technical details
 
Bulkhead connector viewed as if standing on engine facing windscreen;

bulkhead plug
  • Ignition to ACC
  • Switch at fast wipe – W/LG post = 12 v+
  • Switch at slow wipe – B/LG post = 12 v+
  • Switch in Intermittent and off  - K/LG post = 12 v+
  • Ignition to Off
  • Continuity between O LG and B LG posts in intermittent/flick and off modes only.
  • Ground pin to ground

The Motor to bulkhead connector is wired as follows:

motor plug

The plug on the motor is configured as per this diagram below

Pin 1 White
Pin 2 Red
Pin 3 Yellow
Pin 4 Green
Pin 5 Brown

Motor plug

Some harnesses convert to a different colour system:

Pin 1 White (pink/light green)
Pin 2 Red (orange/light green)
Pin 3 Yellow (white/light green)
Pin 4 Green (black)
Pin 5 Brown (black/light green)

Alternative colour scheme

On the opposite side of the Park switch the exiting wires are:

Pin 5 (brown or Black/light green) goes to Red (slow)
Pin 3 (Yellow or White/light green) goes to Yellow (fast)
Pin 1 (White or Pink/light green) goes to Blue (both speeds)