I'm planning to convert from a 2 to 3 speed wiper motor in my '71 Challenger. I have a set of later model ('74)B-body 3-speed linkage which has the exact same shape as my old 2-speed linkage so it seems like it will work. (Someone please tell me if it wont)I also have a 3-speed motor, crank arm, etc. from the same '74 B-body.

I think I have everything I will need except the 3-speed wiper switch, and the associated wiring. The 3-speed motor plugs right into the firewall harness, but what will I need for the dash harness that the switch plugs into? Is there a way to wire it up to the switch (relatively easily) without replacing the harness. Are there any harness (conversion)kits available?

Thanks so much!