J2
Reverse
Contactor
Full motor
current
Energized when the 12V cutoff switch is on, the key is turned to
the 2nd position and the car is in reverse. This configures the motor
wiring to run the motor in reverse.
J3
Forward
Contactor
Full motor
current
Energized when the 12V cutoff switch is on, the key is turned to
the 2nd position and the car is in forward. This configures the
motor wiring to run the motor in the forward direction..
All contactors are identical except the forward and reverse contactors have these two extra tabs.
DC/DC Converter
The DC/DC converter takes the 72V from the traction battery pack and derives a 14V power signal to
power the 12V electrical accessories (lights, radio, horn, etc.) and charge the 12V accessory battery.
The input power is supplied through control contactor J1 and a fuse. The output is fed to the 12V
system through a second fuse.
There are two versions, the 20A model (has screws on top) and the 30/25A model (no screws on top).
The 20A DC/DC has a different connector pair than the 30/25A unit. If you receive a replacement 30A
unit that is to be installed in a vehicle with a 20A you will be supplied the mating connectors to solder
10
