Connecting the Power/IO Cable
Power/IO Cable Connection
7-2
80-JB566-1 Rev. G
MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION
For 6-pin and 9-pin cables, a separate lead is on the Power/IO Cable designated for ignition.
This lead will need to be connected to a 12VDC ignition switched power source. The 2014
and newer Volvo/Mack cables and the Hino cables include the ignition connection. There is
no separate connection needed.
The appropriate masterpack should have been ordered for your installation. If the Power/IO
Cable connector does not mate to the truck’s diagnostic connector, the Y portion of the
Power/IO Cable will need to be cut off and wires will need to be crimp spliced. See
Chapter C:
General Wiring and Installation Guidelines
for instructions.
Connecting the Power/IO Cable
1.
With the truck’s ignition OFF, remove and push back existing truck diagnostic connector.
Check connector to verify it’s clean of debris and there are no bent pins.
2.
Connect the Power/IO cable connector to the truck’s diagnostic connector. Verify the
outer ring is twisted and clicks into place so the ends do not become unconnected by
accident. Verify by pull testing the connector.
Caution
Never connect the MCP50 display cable and the power cable directly to each other. Only
connect these cables to the MCP50 VTM.
3.
For 6-pin or 9-pin cables, connect the ignition wire to a 12 VDC ignition switched source.
If you need to add wire length to the ignition wire to get it to the source, see
Extending
MCP50 Ignition Wire
. This step is not required for the Volvo/Mack 2014 or newer trucks
because the ignition wire is included in the connector.
IMPORTANT
: To identify acceptable ignition connection points on various trucks, refer
to the individual Truck Specific Installation Suggestion Guidelines available. (Freightliner
Cascadia cannot be connected to the ignition switch. They must be connected to a
specific circuit on the fuse panel.)
4.
Put the unused Power/IO cable end where the truck’s diagnostic connector was located.
Note
: On newer Paccar trucks (Kenworth and Peterbilt), it may be required to purchase
a Paccar adapter cable from Omnitracs. See
Appendix G
for more information.
