I need a 3 speed wiper motor and dash switch for 68 Charger.

All I see are 2 speed (Cardone) motors and 2 speed switches (eBay-stupid expensive)

Am I doomed to on/off wiper speeds?

Did Chrysler really make 2 different motors for 2 and 3 speed wipers?

Can you point me to a good vendor for these parts?