Ignition Sense Cable - Vertex Standard VXD series Installation Manual

CAUTION
A good chassis connection via the black primary
power cable is essential for radio operation and
to prevent damage to the radio and cable kit.
Connection to the vehicle frame is desirable.
RADIO POWER CABLE (BLK/GROUND)
RADIO
CH
Rear connector
NOTE:
Caution: if you choose to connect the radio's IGNITION line directly to the car's battery, excess use of
the radio when the car's ignition is not running (i.e. alternator running) could result in a slow discharge
of the car's battery. This configuration allows the radio to operate with the car's ignition switch ON or
OFF.
If the radio's IGNITION line is wired to the car's ignition switch, the radio will only function when the
car's ignition switch is turned ON.

3.4 Ignition Sense Cable

Vertex Standard supplies an ignition sense cable and recommends that it be used with every mobile
installation. The ignition sense cable allows the radio to be turned on and off with the vehicle ignition
switch, and allows the radio to "remember" the state of the radio on/off switch, even if it is changed
while the vehicle is off.
• For radio ON/OFF control independent of the ignition switch, connect the red ignition cable (pin
25 of accessory connector) to "battery hot" at the vehicle fuse block (dash mount only).
• For radio ON/OFF control via the ignition switch, connect the red ignition cable to "ignition" at
the fuse block.
The ignition sense cable uses either a 3-Amp or 4-Amp fuse.
For other considerations when connecting the ignition cable, see the Vertex Standard VXD Series Mo-
bile Radios Basic Service Manual.
RADIO IGNITION
CABLE (thin RED)
MICROPHONE
SPEAKER
Figure 3-8 Cabling Interconnect Diagram for Dash Mount
Chapter 3 Installation Details for Standard Configurations
IGNITION SWITCH
ON/ACC
3A OR 4A FUSE
RADIO POWER CABLE
(RED/BATTERY HOT)
VEHICLE
GROMMET
SEE NOTE
(+)
15A OR 20A
FUSE
VEHICLE
BATTERY
Page 27
PART OF
VEHICLE
WIRING
(-)