TM9100 Mobiles: 110 W Mobile Installation Guide Installing the Radio 17
© Tait Electronics Limited October 2005
4.6 Connecting to the Ignition Signal
Ignition Sense allows the radio to be turned on and off with the ignition key
of the vehicle. The TM9155R is already fitted with an ignition sense kit,
however it must be programmed for ignition sense operation.
If Ignition Sense operation is desired:
1. Make sure that the AUX GP13 line has been programmed for
ignition sense.
2. Run the yellow wire from the back of the mobile body (underneath
the 110W RF Amplifier) to a 12V signal controlled by the ignition
key.
3. Secure the cable with cable ties using the small holes in the side of the
chassis.
Note The logic thresholds for AUX GPI3 are based on 3V3 levels.
However, AUX GPI3 can be connected directly to a +13.8V
ignition signal.
Figure 4.3 Holes for cable ties
Holes for cable ties
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