6815851H01-O June 3, 2005
Options and Accessories Installation: Dash-Mount Accessory Installation 3-3
3.2 Dash-Mount Accessory Installation
For dash-mounted configurations, the accessories must be installed through the accessory
connector assembly that is located on the rear of the radio, adjacent to the power connector.
Motorola-approved accessories are supplied with male terminals crimped to a 20-gauge wire
specifically designed to fit the plug of the accessory connector assembly.
Insert the male terminal into the accessory connector assembly in the appropriate location and
connect the accessory connector assembly in the rear accessory port (see Figure 3-6). Do not use
other generic terminals in the plug. Generic terminals can cause electrical intermittencies and may
cause damage to the plug.
3.2.1 MDC Emergency Pushbutton or Footswitch Installation
Mount the footswitch using the hardware that comes with the kit. Open the accessory cable
connector housing; remove the jumper wire. Connect the emergency switch wires to pins 14 and 15
(see Figure 3-2). Close the connector housing; route the finished cable from the switch location to
the control head location.
Figure 3-2. Emergency Switch Wiring Diagram
3.2.2 Horn and Lights (External Alarms) Relays
For installations that use the horn/lights option, select a suitable location for mounting (normally
under the dash) and, referring to Figure 3-3, perform the following procedure:
1. Horn Relay—Connect the relay contacts across the horn ring switch, typically found in the
steering column. Open the accessory cable connector and connect the two control wires
(male pins) into locations 18 and 24 of the connector.
2. Lights Relay—Connect the relay across the headlamp ON/OFF switch, typically found in the
steering column. Open the accessory cable connector and connect the two control wires
(male pins) into locations 19 and 24 of the accessory connector.
ACCESSORIES
CONNECTOR
PIN 14
PIN 15
NOTE 1
SPST NORMALLY CLOSED
EMERGENCY SWITCH
NOTE 1: REMOVE BLACK JUMPER WIRE INSIDE
ACCESSORY CONNECTOR HOUSING.
INSERT WIRES FROM EMERGENCY SWITCH
GND
EMER
MAEPF-27617-O
1
7
8
14
13
20
21
26
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