Axial SCX10 II Jeep Cherokee gets a winch 

Here's how I installed a winch into a Axial SCX10 II Jeep Cherokee. I found this winch on ebay. There were problems with the winch reverse gear during installation. I have to try to check where the fault is or else the winch is just already broken. Let me know if I did something wrong and why the reverse isn't working.
RC car in this video:
Axial SCX10 II Jeep Cherokee (AX90047)
- Traxxas 3s 5000mAh battery (TRX2832X)
- Front/Rear Inner Fender Wells Mudguard Kit
- Metal Electric Winch+Controller for 1:10 RC Axial SCX10 90046 TRX4 Redcat