This new Apex output board will handle motors from little Mabuchi plastic cars to the G12 motors.
It is a direct replacement fit for the original board and will use the same mounting holes and screws.
On the ribbon cable socket, just slide the little contact retainer to release the ribbon cable and gently pull it out.
The controller will need to have a 20-25A fuse fitted depending on the highest current draw of motors that will be used.