I bought a 3-speed wiper motor from Jules. My car is a '70 Dart and came stock with a 2-speed set-up.

Besides a 3-speed switch what else do I need to convert my car?

3-speed switch harness to main dash harness?

Different arm that bolts to the motor drive stud?

Any help is appreciated...

-Michael

the harness is the same , the switch makes it work , but there is an external wire that should be on the switch that jumps between terminals on the rear. Also the arm off the drive stud is different .

I was just told the harness is different and the little arm attached to the drive stud is the same.

Now I am really confused...

-Michael

Maybe it is ? I'm going by a B body , the dash harness is the same , the harness from the motor to the bulkhead is different , I would ASSuME A body is the same ?

ns1aar is correct.
You will need a crank arm ending with part number 272.
You will need a 3 speed switch. The dash harness remains the same.
You will need a tan colored nylon bushing instead of the 2 speed black one.
The 3 speed wiper motor black plug will plug into the same pod the 2 speed plugged into
on the firewall bulkhead.
Jules

Thank you Jules, and others...

-Michael