User Manual

14221-1200-4000, Rev. A
66
8.3.6.2.2 Control Head and Radio Turn On with a Manual Switch
With this wiring configuration, the control head and radio are manually turned on and off via an on/off
switch mounted separately from the control head and radio, not through the vehicle’s ignition switch/key.
This configuration is used when, for example, the radio must remain on even when the ignition key must
be removed from the vehicle and
a separate on/off switch is acceptable and/or required. In this
configuration, the white wire connects to a fused switched power source such as that provided by a toggle
switch mounted on the vehicle’s dash panel. When using this configuration, the on/off/volume control
must be left in the on position.
Otherwise, the radio will remain off when the switch is on.
1. Route the white wire of the control head’s DC Power Cable from the back of the head to an area near
the location of the panel-mounted on/off switch. Protect the wire from possible chafing as necessary.
2. Cut a short section (6 to 8 inches) off the end of the white wire and strip the ends.
3. Obtain one of the yellow waterproof (HFB-type) fuse holders included with the control head’s DC
Power Cable, and crimp one half of it to one end of the short section of wire.
4. Using an appropriate electrical terminal, connect this short white wire to unswitched 12-volt DC
power source at or near the vehicle’s fuse box.
5. Cut another section of white wire from the cable. This wire must be long enough to reach from this
fuse holder to the location of the panel-mounted on/off switch.
6. Strip one end of this wire and crimp the other half of the waterproof fuse holder to this wire end.
7. Strip the other end of this wire and, using an appropriate electrical terminal, connect it to the common
terminal of the switch.
8. Connect the white wire of the power cable to the load (switched) side of the switch.
9. If not already, mount the switch to the vehicle’s dash panel, or other customer-selected location.
10. Obtain the 3-amp AGC-type fuse included with the cable, and install it into the fuse holder.
11. Tie and stow these wires as necessary so they remain out of the way of casual contact and wire chafe
is avoided.
12. Label this power switch accordingly. For example: “RADIO ON/OFF.”
8.3.6.2.3 Control Head and Radio Are “Hot Wired”
In the “hot-wired” configuration, the control head and radio are turned on and off only by the control
head’s on/off/volume control located on the front panel of the control head. In this configuration, the
control head’s white wire must be connected to unswitched and fused 12-volt
vehicle power. Follow the
procedure presented in Section 8.3.6.2.1, except connect the white wire to unswitched battery power
instead of switched (“Accessory”) power. Be sure to fuse this connection with the provided in-line fuse
holder and 3-amp AGC fuse.
8.3.7 Using Vehicle Fuse and T-Tap Kit (Optional) Instead of Waterproof Inline
Fuse Holder (Standard)
The waterproof inline fuse holder and AGC fuse included with the DC Power Cable must be used if the
white wire connection point is located in a harsh environment such as in the vehicle’s engine
compartment. In this case, disregard all information presented in this section, and follow one of the three
procedures presented in Section 8.3.6.2 to connect the white wire.
However, if the connection point is not in a harsh environment
, such as under the vehicle’s dash panel,
Vehicle Fuse and T-Tap Kit FS24473 may be ordered and used to make the white wire connection. As
shown in Figure 8-12, this kit includes an ATM fuse holder and fuse, T-tap crimp terminals for tapping