2 loose wires (solved)

You'd need to show some good clear well lit images of what you're describing; we'd need to see the connector / cable damage that ripped wires out, including the back (cable entry side) of the connectors where the wires used to go, and the wires themselves, to see if we can tell where they originally went.

Once we can see which pins had wires but don't anymore, then we can suggest testing to find out which wire goes to which pin.

(to start out, most likely the black is a ground wire, and probably should go to the same electrical point that battery negative does, or any other ground wire in the system such as from throttle, PAS sensor, etc. The white wire is likely the speed signal itself)

does this help
its the small white and small black one, everything else i know where it goes

Best guess is the black wire goes to any of the Ground pins, and the white wire goes to either PFS or Cruise, if those are not presently used, as those (and Brake) are listed as digital inputs according to the Grin Tech's BAC500 manual
(I could not find anything from ASI that actually defines what the pins are used for). You could try one, and if it doesn't work try the other. It shouldn't hurt anything, either way, even if neither one works.

The Brake input, if unused, could also be tried, though it's more likely to be programmed as a brake input by default, so the speed signal would probably engage/disengage the brake rapidly and keep the system from operating correctly.

It's more likely the speed sensor input would go to a digital input than an analog input, but it could be used on either kind, so any unused analog input could also be tried.