Current limiting diodes are NOT required for the v.2 PowerMAX!. Each PowerMAX! motor is rated for 6 volts DC or 12 volts DC for 2 units in tandem. Exceeding these currents will void the warranty. PowerMAX! units with burned out motors will not be replaced. Diodes are ONLY necessary if using LED headlights and DC throttles. Using Diodes will assure the headlights come on before the 6VDC motor starts turning.
IfDCC equipped, you don't need the diodes. (Follow instructions from the DCC manufacturer.)