Chapter 3
20 Viper Pro Installation & Operation Manual
Chassis Interface Cable and CAN Switch Box Connection
Note: The CAN Switch Box and switch box mounting bracket should be mounted to the Viper Pro field
computer prior to beginning the following procedure. Refer to the CAN Switch Box Installation and
Operation Guide for detailed instructions.
1. Locate the single round connector labeled ‘To Chassis or SmarTrax Tee Cable’ on the Envizio Pro/Viper Pro
chassis interface cable (P/N 115-0172-001).
2. Insert this connector into the ‘To Cab Cable’ on the chassis cable previously installed on the vehicle. Thread
the connectors together to secure the connection.
3. Route the end of the cable with two round connectors to the back of the Viper Pro and connect to the main
and auxiliary ports.
4. Connect the 2-pin Deutsch connector labeled ‘Switched Power Output’ to the back of the CAN Switch Box.
5. Connect the 4-pin Deutsch connector labeled ‘CANbus’ to the back of the CAN Switch Box.
6. Connect the 3-pin round connector labeled ‘GPS Speed Out’ to the back of the CAN Switch Box.
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