I swapped a 4r70w and am controlling with the quick 1 controller... My question is where do the speedometer get its signal from. Does it come from the OSS or the wheel speed sensors?
use the optional out on the Quick 1. you should have had to wire the speed sensor out from the 4r70w to the quick 1. This allows you to adjust the input to the speedometer for the difference pulse rate, tire size, and gear ratio.
you will need to add a capacitor across the lines as stated in the instructions.