4 WD RC Mower Motor Controller upgrade to Sabertooth 2x60 (Update)

My RC mower needed more power. This video chronicles the steps taken to upgrade the wiring and motor controller to a Dimension Engineering Sabertooth 2X60. This is an updated video that contains addition measures to stabilize performance. I added the ground wire from the receiver channel to the controller (shown in 2x60 documentation, duh) and a flyback diode on the contactor magnetic circuit.
Link to shared DXF files for Controller Motor Wiring, Frame dimensions and alternator mount .
drive.google.c...
Bill of Materials
Dimension Engineering Sabertooth 2x60
24V 200A SPNO Solenoid replacement for White Rogers 58-11411
6ga silicone stranded wire (3 ft. black, 3 ft. red)
6ga 5/8" terminals (2)
6ga 1/4" terminals (4)
12ga silicone stranded wire (10 ft. black, 10 ft. red)
12ga twin ferrules (4)
16ga Silicone wire (6 ft. black, 6ft. red)
Battery Terminal crimper tool
Ferrule Crimper Tool
Assorted ring terminals 12ga - 22ga
On/off key switch