- Security Torx Screwdrivers: https://www.amazon.com/Piece-Security-T ... 1295460461
- Phillips Screwdrivershttps://www.amazon.com/TEKTON-26673-Phi ... 17511&s=hi
- Soldering tools-- soldering iron, solder, wire strippers (or a sharp knife and good hands), you could get away with wire nuts/lever nuts for electrical connections that don't run a lot of current thru them (sensor wires, but DEFINITELY solder the two battery and three motor wires)
For the bottom of the scooter, there are around 10 torx security screws on the bottom lip that runs around the deck of the scooter, oriented to screw up (the heads to unscrew are facing down). Unscrew all of those, being careful to also unscrew the ones near the kickstand. Then carefully lift the deck up off the bottom of the scooter, and disconnect the orange connection cable to the brake light. Then, you have full access to the bottom of the scooter to replace the motor controller. At that point, you'll be at where samzone's video begins, and you'll need to do the soldering/connecting to the proper places as samzone shows so elegantly in his video.
If i missed anything @samzone let us know!