Hi,
I have a 1995 4/4 which has no intermittent wiper control on it. I decided to fit the Smartscreen device which allows intermittent control between 5 and 30 seconds. Although a pain to get into the Morgan wiring the device works well.
However I am concerned that to operate the device you have to flick the wiper lever twice to set the intermittent period. I am concerned that this will cause a lot of wear on the wiper lever. I decided to fit a spring loaded toggle switch across the wiper lever to give a momentary contact. Unfortunately this blew the wiper fuse. I concluded that the wiper switch must put a short to earth on the supply from the switch contact to the wiper motor when switched off. I have come across such arrangements previously to help slow motors but I am not clear why this would be done in this application. I have been advised that the wiper switch was originally from a Triumph Herald but I am not sure if that is true.
I have thought about a work around by using a diode but before I try that I would like to understand why the short is used in the first place.
So anyone have any clues please.
Cheers
David
