Installation Instructions

2.1.3
Radio Operation Wiring for Dash and Remote Configurations
Determine the radio functionality you wish to achieve from the tables in Remote Mount: Power, Ignition,
and Emergency Cable Installation on page 45, which is the vehicle ignition switch state is controlling,
the physical wiring of the radio ignition sense (ACC) wire, and by the programmed CPS setting. For
more radio functionality as determined by the programming of the ignition switch in the CPS, refer to
the Help menu in your CPS (Ignition as: Required, Blank, Soft Power Off, TX Inhibit, PTT TX Inhibit,
Ignition Only Power Up).
Choose a clean ignition point which is not shared in the immediate vicinity by other high current
accessories/devices. This choice helps to reduce the transients on the ignition line. Examples of
high-current accessories/devices are air horn, relays, and lightbars. It is safe to wire to the vehicle ACC
line, not the START, or the solenoid side of the ignition circuit. Refer to Finishing the Installation on
page 125 for best installation practices. The Ignition sense (ACC) cable uses either a 3 A fuse
(6580283E01) or 4 A fuse (6580283E02).
2.1.3.1
Dash Mount: Power, Ignition, and Emergency Cable Installation
The standard dash mount rear ignition sense cable HLN6863 contains a “thin red” ignition wire, a
jumper wire that shorts emergency to ground, and two gray wires attached to an external speaker plug.
The thin RED wire is the ignition sense wire. Refer to the tables from Remote Mount: Power, Ignition,
and Emergency Cable Installation on page 45 for its correct wiring configurations.
NOTICE: This cable must be attached for the radio to operate in dash mount configuration
regardless of how emergency is programmed in the CPS or wired inside the vehicle. Either the
emergency jumper wire or an emergency accessory (footswitch or button) must be wired to the
rear of the radio in dash mount configuration. Otherwise, upon attachment of the radio power
cable to the vehicle battery, the radio incorrectly determines that emergency operation has
been activated, such as when an emergency footswitch is de-pressed and the emergency pin is
ungrounded.
2.1.3.2
Remote Mount: Power, Ignition, and Emergency Cable Installation
The single control head O2, O3, O5, E5, O7, and O9 remote mount configurations receive power from
the J200 red and black wires connector. The yellow wire at J200 is an ignition sense wire.
On mid power radios, the J2 and J600 connectors can also be used for ignition sense. On high-power
radios, the J200 yellow wire or the J600 connector can be used for ignition sense.
If HLN6863 is attached at J100 of the O2, O3, O5, E5, O7, or O9 control head, the “thin red” wire do
not function as an ignition sense wire, since the J100 connector has no ignition sense electrical
connection.
NOTICE: It is incorrect to attach the ignition sense wire to more than one wire or connector.
Refer to the following tables for its correct wiring configurations.
The O3 control head receives its power down the CAN cable, and detects the ignition state by the
ignition sense pin at either J2 or J600. On mid power radios, the J2 and J600 connectors can also be
used for ignition sense. On high-power radios, only the J600 connector can be used for ignition sense.
In Multi-Control Head installations, the yellow ignition wire must be connected to the head assigned ID
#1. See Setting the Initial Control Head ID on page 56 for further information.
In remote mount O2, O3, O5, E5, O7, or O9, an Emergency jumper to ground is placed by default on
the TIB (JU344) so that there is no need to attach a cable with an emergency accessory to either J2 or
J600. This jumper must be removed if an emergency accessory (footswitch or button to Ground) is
installed at either J2 or J600 (or J626 on the accessory cable). If the jumper JU344 is removed but no
MN005720A01-AB
Chapter 2: Standard Configurations
45