10
T2000 Installation Guide
Power Cable
1. Disconnect the vehicle’s battery unless specifically prohibited from doing so by the customer,
vehicle manufacturer, agent or supplier. In this event, exercise extreme caution throughout the
installation and fit the fuses only when the installation is complete.
Caution
:
Always disconnect the radio’s power lead before connecting a second battery or using
power from another vehicle (e.g. when “jump-starting” the vehicle).
2. Determine where the battery leads will be routed.
3. Cut the negative and the positive wires where the in-line crimp fuse holders will be placed (as
close to the battery as practicable).
4. Insert each end of the negative wire into one of the in-line crimp fuse holders and crimp them to
force the metal contacts onto the wires. Terminate the wire at the battery earth.
5. Repeat Step 4 for the positive wire and terminate it at the positive terminal of the battery.
Caution
:
Prevent the power wires chafing on any metal parts.
Note:
T2000
II
radios are designed to operate from a nominal 12V negative earth supply, and require
currents of up to 8A. (The radios will tolerate a supply voltage range of 10.8V to 16.0V). In
vehicles with a 24V electrical system (e.g. many trucks), it is essential to provide a suitably
rated 24/12V converter (e.g. Tait T2007) to isolate the radio from the battery and protect it
against excessive voltages.
6. If the economizer is to be controlled by the ignition line, terminate a wire in the power connector
and connect the ‘ignition’ wire to a +12V supply which is live only when the vehicle’s ignition is
switched ‘On’.
External Wire (Horn/Hush/Emergency)
The T2000
II
can be configured to operate the vehicle’s horn, radio or a hidden switch:
1. Terminate a suitable length of wiring in the “external” port of the power connector.
2. Run the free end of the external wire from the power connector to the appropriate vehicle wiring.
The option’s interface is usually configured to switch or be switched in the ground state. Confirm
the exact operation in the documentation supplied with the interface unit.
Remote Control Head Option
The control head of some T2000
II
models may be supplied ready for mounting remotely from the
radio chassis. In this case the control head should be located away from direct sunlight, and the
cable connecting it to the radio should be routed away from the antenna with care taken to ensure
that the cable will not be subject to damage.
If it is necessary to run the cable through a bulkhead or similar obstruction, you may unplug the
cable from the control head as follows:
1. Unscrew the rear of the control panel and lift off the rear cover, taking care not to lose the two
nuts located on each end.
2. Disconnect the red connector from the printed circuit board socket to free the cable.
T2000 Installation Guide
3
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