I lost the remote for my Badlands 2500 lb winch. Item # 61297. Bought at Harbor Freight.

if wired correctly properly sized wiring and grounding then bring back

Refer in instructions that came with winch Look on harbor freight website all there instructions are there.
https://manuals.harborfreight.com/manuals/63000-63999/63770.pdf

Harbour freight is not the best source for this type of electronics

Harbor Freight 2500lb ATV winch remote replacement CHEAP EASY FIX

electric motor problem or gear seizure causing an overload on the motor

Unfortunately, harbor freight retires nail gun models very often. They only list the current nail gun models on their web site, thus manuals and parts are only available for a short time. The only help is that the new models are similar to the old. Sometimes the internal parts are the same but at least the user instructions should be the same. Download various manuals from similar models on their web site today and compare. Do not order parts unless you are sure about fit. As far as orings, you can use generic also from harbor freight (oring kits in standard and metric, not expensive).
Good luck

http://www.harborfreight.com/manuals/94000-94999/94511.pdf

Your welcome!