Installation Guide

80-53184-1 Rev. A QUALCOMM Proprietary 17

Terrestrial Mobile Communications Terminal Installation Instructions Cable Installation

3. Plug the Handset connector into the appropriate slot of the TCU.

Installing the Power/Accessory Cable

The Power/Accessory Cable connects the TCU to the vehicle’s electrical power source.

Cable Run

Run Direction - The Power/Accessory Cable can be routed from front to back or back to front. The

direction depends on whether the access hole is big enough for the connector (1-

1/4 inches). If you

route the cable internally, route it from the TCU to the dash area.

Routing Location - The cable can be routed internally or externally. Use existing cable routes, if

possible.

Cable Dressing - Store excess cable underneath the driver’s seat and secure with tie wraps. Do not cut

the Power/Accessory Cable to ﬁt the vehicle.

Power/Accessory Cable Routing

Follow these steps to route the Power/Accessory Cable:

1. Select one of the following electrical power interface locations on the vehicle:

• Key switch

• Fuse panel

• Bus bar

• Circuit breakers

2. To make the Power/Accessory Cable easier to route through holes, temporarily remove the fuse

from the fuse holder on the end of the cable.

3. Route the fuse end of the Power/Accessory Cable from the TCU location into the cab of the

vehicle. Route the cable with other cables, if possible. Make sure the fuse end reaches the power

interface location and that you have enough cable in the cab to work with.

4. After the Power/Accessory Cable is in the vehicle cab, re-install the fuse onto the appropriate

wires.

Power/Accessory Cable Wire Connections

The vehicle battery supplies the power to the TCU. There are three required connections that you must

make at the fuse end of the Power/Accessory Cable:

• +12 VDC Battery (Main) (unswitched)

• +12 VDC Ignition (switched)

• Chassis Ground