STRIP 1912830 - Caterpillar

Connections of the Radio Telemetry System (Broadcast)
Illustration 1 g00684952
Cables for the Radio Telemetry System (broadcast)
All connections are made in the cabinet that is behind the cab. Be sure that all connections are tight.
Power Connections
+24 DCV
The main power connection is on the lower 3T-0376 Magnetic Switch (relay) of the two 3T-0376 Magnetic Switches. The magnetic switch is located in the upper center portion of the cabinet. The output of the magnetic switch (relay) is powered only when the key start switch is in the ON position. This circuit also connects to circuits that are marked with the wire number 112-PU(Purple). The other output on this magnetic switch is live when the disconnect switch is closed. This circuit also connects with circuits that are marked with the wire number 109-OR(Orange).Provide circuit protection by placing a 10 amp fuse as close as possible to the magnetic switch. A 10 amp circuit breaker should be used when the load on the circuit is between 12 DCV and 24 DCV. Use 16 gauge or larger wire. DO NOT use a fuse or load that is larger than 10 amperes. Ground
Connect to the cab ground post. The cab ground post is located to the right and below the +24 DCV connection.Data Connections
A sure-seal connector is located to the right of center near the bottom of the cabinet. There are seven contacts in the connector. A 6V-3000 Sure-Seal Repair Kit can be used to help make connections to the data wiring. Connections are listed in the following table:
Table 1
Contact No. Pin or Socket Circuit Function/ID
1 Socket N/A
2 Pin Ground /E972-BU(Blue)
3 Pin Receive/876-OR(Orange)
4 Pin Transmit/875-BU(Blue)
5 Socket N/A
6 Plug N/A
7 Plug N/A Contact Caterpillar for information on the RS-232 data that is used with the VIMS.