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View Full Version : TR4/4A Heater/wiper question for a 4A



HarryL
03-06-2013, 04:05 PM
None of these worked when I tore the car apart.
The Heater motor I have now is a 2 speed. Was that the norm ?
Two wires coming off the motor to accomplish this.
Was the wiper motor a 1 speed ?
Wiring question on the 2 speed switch later.
In advance- Thanks,
Harry

3798j
03-06-2013, 05:49 PM
Harry my 4A (and also the one I had back in the 60's) has a 2 speed wiper and a 1 speed heater fan.

TR3driver
03-06-2013, 07:12 PM
I agree. However I think the single speed heater motor had two wires (one for ground).

alanjohnturner
03-07-2013, 08:24 AM
Switch wiring for two-speed motors is all in a recently posted article on the forum.

This is NOT obvious. And you can damage the wiper if you "just guess"

Al.

HarryL
03-07-2013, 12:17 PM
Thank You everbody for the imput- much needed I might add.
Have decided to go with switches that allow one speed only on both-
will change later if desired.
Regards,
Harry

Darrell_Walker
03-07-2013, 01:19 PM
Thank You everbody for the imput- much needed I might add.
Have decided to go with switches that allow one speed only on both-
will change later if desired.
Regards,
Harry

That will probably do fine, unless they invent a switch that can make them go faster than full speed! I used to say that my 4A has automatic wipers, because it was too weak to run them on low when the windscreen was dry. Certainly there were other problems, though.

alanjohnturner
03-07-2013, 01:54 PM
You can check the wiper-motor part-number from here:

https://www.vitessesteve.co.uk/LucasStuff/LucasStuff1.htm

Al.