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I recently purchased a 2 speed wiper motor unit made by Preslite from a swap meet. Unfortunately the guy didnt have the wiring diagram. Its a perfect swap out for my Ek holden ( is greatly needed by the Evil Engineer for the V8).Basically the terminals consist of a plastic unit with 4 blade terminals lablled as follows:-
1. Red wire which enters the Dc motor
2. Yellow wire which enters the arm movement mechanism
3. Black wire paralleled to both the Dc motor and the arm movement
4. Green wire which enters the DC motor
Note terminal on housing which im presuming as earth.
If anyone could shed some light on which are switch terminals (presuming red and green)and the function of the yellow(possible earth for the arm movement mechanism?? )etc it would greatly appreciated.Ive already tried unbolting it apart only to have 3 brushes burst out and badly chip the rear end of one brush when re-assembling.