Windscreen Wiper Switch

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The standard 2-speed windscreen wiper motor used in Morgans from the 70's well into the 1990's (and possibly beyond) has a somewhat peculiar arrangement for the interaction of speed and auto-park settings.

The switch to operate this has a particular internal wiring arrangement, and so if the stalk switch is replaced by a toggle switch on the dash (Off-On-On) then care has to be taken to select the correct Lucas part number. A standard Off-On-On switch will lead to the internal contacts in the wiper motor burning out.

The full explanation, together with wiring diagrams, can be found here

The correct switch to use is Lucas part number #35927, This is supplied by Holden Vintage and Classic, see here