$35 Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!

I see this is an older thread but I am in desperate need of help and no one local knows anything about eps in projects. I have a 68 F100 that I installed 09 Prius set up and wired accordingly. The truck has not been started yet as it has been receiving several mods. My problem is with the truck on stands, I can turn the wheels back and forth by hand and the eps box turns but once inside, the steering wheel will not move past a half inch. It is like one side freely moves and the other is stuck solid. I can't start the truck yet but with the key on I hear the eps box sound up but still does nothing inside. Any and all help greatly appreciated! I have a video of it but not sure how to attach here. I could email if interested. Thanks

I was just reading Flaming Rivers install instructions due to a different thread and they mention that the orientation is critical. Didn't make a lot of sense to me until I figured out that there is an input shaft and an output shaft.

Any chance you have the input and output shafts reversed and the reason it is resistant to movement via the steering wheel is because you are trying to turn the output shaft on the EPAS motor?