NOTE
In some installations an additional noise suppression filter such as option
PMPD1A (19A148539G1) may be needed for satisfactory performance.
NOTE
With some accessory points, the voltage only drops when the ignition
switch is in the START position. A connection point should be used where
the voltage is completely off when the ignition switch is in the START
position.
Certain problems may be encountered when accessory equipment is
connected to the ignition or accessory lines of the vehicle, where these
lines may have large filter capacitors or a leakage path present.
If the radio does not turn off within a reasonable amount of time after the
ignition is turned off, first try a different accessory or ignition sense pick
up point in the vehicle. Many vehicles have more than one circuit that is
switched by the ignition switch, and one may be available that does not
have large filter capacitors or a leakage path present.
If a different pickup point cannot be found, then add a 470-ohm 1-watt
resistor from the ignition sense pick point to ground. This will discharge
the capacitor(s) or reduce the leakage voltage to a low value. Current drain
through this resistor will be minimal (less than 0.03A) when the ignition
is switched on.
CAUTION
Connect the orange fused lead to the positive (+) battery terminal, and black
to the negative (-) battery terminal. Always locate the fuse as close to the battery
as possible.
Connect the red fused lead to the ignition on" sense point (preferably an
"Accessory" point on the fuse panel that is switched on when the ignition switch
is in the accessory position and in the "run" position). Locate the fuse as close as
possible to the accessory point.
10
Figure 10 - External Alarm Relay
EXTERNAL SPEAKER KIT - OPTION PMZM1K
The external speaker kit includes a speaker (option PMLSIF) and an external
speaker cable (option PMCC9M). External speaker cable (option PMCD1W) is
available for use with this kit to place the external speaker up to 16 feet further
away from the radio. Installation of this kit requires the option cable kit - option
PMD7Z.
1. Mount the speaker so it is directed to the operator but does not cause interfer-
ence with his vision. It also should not present a hazard in the event of an
accident. The speaker may be mounted on the lower edge of the instrument
panel, the fire wall, or above the windshield in some trucks. Use the mounting
bracket as a template for locating the mounting holes, and mount the speaker
as shown in Figure 11.
2. Install the option cable PMCD7Z if not already present.
3. Pins are supplied on the ends of the external speaker cable option PMCC9M.
Push these pins into sockets 2 and 9 of the connector housing supplied with
the option cable. Refer to Figure 8 and Table 2.
4. Plug the connector housing into P2 of the option cable.
5. Connect the plug end of the external speaker cable to the speaker. If installing
the external speaker cable option PMCDIW connect it between the speaker
and the plug end of the external speaker cable option PMCC9M.
19
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