Teletrac CTO7, Installation Manual

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Mack CH Series- Power, Diagnostics,
and PTO Connections
Power Connections: As the 6 or 9-pin Deutsch connector
should provide 12 volt constant power, only the ignition
sense requires an external connection. The ignition feed is
accessed from the rear of the ignition switch, as shown at
top right. Many of the wires are white, thus a digital
multimeter must be used to verify the correct wire.
PTO Connection:
The aftermarket PTO switch is located on
an L-bracket on the bottom of the driver’s side dash. Wire
colors vary, but the output signal is
negative , which must
be verified with a digital multimeter. Once the correct
signal wire is determined, it will be connected to the
grey
wire of the TM470J wiring harness.
Diagnostic Connection:
The 9-pin Deutsch plug is located
on the bottom of the dash, facing downwards, directly
below the ignition switch or on the lower driver’s side
kickpanel. Carefully remove the OEM port and replace with
the J-bus y-adaptor.