Variable vs. Standard Wiper Switch

[abloch]

1962 Dodge. Pretty sure the car came standard without the variable speed switch but I didn't have one lying around so I threw a variable switch in. Switch is acting up, working then not working and not parking correctly when turned off.

Anyone know if there is a difference between the motors as well or have I just got a bad switch?

Thanks

 

[69plywgn]

The '62 models with the low trim level (Savoy, 330, etc.) came standard with a single speed wiper. The variable speed wiper was optional. Yes, there's a difference between the motors.