• can switch 12V or 72V signals.
• are single pole single throw.
• have two connections for the coil voltage, pin 85 and pin 86.
• have three connections for the relay contact, common is pin 30, normally open is pin 87 and
normally closed is pin 87a.
DC Relay Location
In the SD, six of the relays are under the dash on the passenger side and two are in the rear of the car
behind the four large contactors. In the PK all the relays are on the PCB module in the center front
compartment under the hood.
12V Coil DC Relay 72V Coil Relay (tab usually cutoff) 110VAC Coil Charger Lockout Relay
The 12V DC coil relay has writing on the top indicating that is a 12V coil. The 72V relay has no
writing on it.
Contactors
All four contactors are grouped together in the rear of the vehicle next to the motor controller and have
72V coils. All coils are protected with fly back diodes.
Schematic
designation
Function
Contact
Current
Description
J4
Control
contactor
DC/DC
and heater
current
Energized when the 12V cutoff switch is on and the key is turned
to the 1st position. This provides power to the DC/DC converter,
dash volt meter and the heater.
J1
Main
contactor
Full motor
current
Energized when the 12V cutoff switch is on, the key is turned to
the 2nd position, the car is in forward or reverse and both the
emergency and foot brakes are released. This provides power to the
motor, motor controller and the forward and reverse contactors.
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