I bought a used PRO ESC off the site and a spot of the positive battery wire was worn down to the wire. I get the feedback from the radio by the light blinking but no Forward. Is it shorted out? Do they repair them at Orion for a reasonable price or just cut my loses and buy new?

Did you re-calibrate the radio and ESC? Also, try a new sensor wire. The bare spot in the lead can be covered with heat shrink. Hopefully, it all works out for you.