Harris M7300 Installation And Product Safety Manual page 62

MM-014763-001, Rev. E
10. Route the white wire of the control head's DC Power Cable from the back of the head to the area near
this connection point. Protect the wire from possible chafing as necessary.
11. Obtain one of the waterproof (HFB-type) fuse holders included with the control head's DC Power
Cable.
12. Cut excess length from the white wire and splice the fuse holder into it, near the location of the
connection point.
13. Using an appropriate electrical terminal, connect the white wire to the switched power connection
point. An open-barrel spade terminal is included with the cable for this purpose, but another type of
terminal (not supplied) may be used as required.
14. Obtain the 3-amp AGC-type fuse included with the cable, and install it into the fuse holder.
15. Tie and stow all wiring as necessary so it remains out of the way of casual contact and wire chafe is
avoided.
8.3.4.2.2 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 CH-721 control head's
on/off/volume control must be left in the on position for automatic power-up/down to function properly.
14. 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.
15. Cut a short section (6 to 8 inches) off the end of the white wire and strip the ends.
16. Obtain one of the 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.
17. 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.
18. 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.
19. Strip one end of this wire and crimp the other half of the waterproof fuse holder to this wire end.
20. Strip the other end of this wire and, using an appropriate electrical terminal, connect it to the common
terminal of the switch.
21. Connect the white wire of the power cable to the load (switched) side of the switch.
22. If not already, mount the switch to the vehicle's dash panel, or other customer-selected location.
23. Obtain the 3-amp AGC-type fuse included with the cable, and install it into the fuse holder.
24. Tie and stow these wires as necessary so they remain out of the way of casual contact and wire chafe
is avoided.
25. Label this power switch accordingly. For example: "RADIO ON/OFF."
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