Installation Manual

Table Of Contents
14221-1850-4000, Rev. A
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9. Attach the ring terminal and black wire to the bare metal surface using stainless-steel self-locking
hardware (i.e., machine screws with washers and locking nuts) or other appropriate hardware to ensure
a reliable terminal-to-metal contact. Tighten securely.
10. Apply an approved paint or rust-inhibitor over the remaining exposed bare metal surface and around
the ring terminal.
Figure 9-8: Wiring Diagram for a Remote-Mount Radio Installation
9.2.2 Red Wire, Main Fuse Holder Connection (Radio’s Main Power Wire) and
Ethernet Cable
In a typical vehicle installation, most of the Ethernet cable between the remote-mount radio and the Control
Head can be routed through the vehicle along with the 10-AWG red wire of the radio’s DC power cable.
This is a time-saving measure. Any necessary option/accessory cables from the back of the radio can also
be routed with this wire and cable within the vehicle’s interior (i.e., up to but not through the vehicle’s
firewall). The following installation procedure is recommended:
1. From the installation kit, obtain the Ethernet cable.
2. Remove interior panels, door kick panels, etc., as necessary to route the 10-AWG red wire and the
Ethernet cable from the area of the remote-mount radio (typically near the rear of the vehicle) to an
area near the vehicle’s firewall.
3. Route the red wire and the Ethernet cable through existing channels in the vehicle body to an area near
the vehicle’s firewall. Leave service loops at the rear of the radio. Ethernet cable installation is
completed per a later procedure in this manual (Section 9.3.6).
4. Continue installation of the 10-AWG red wire by routing it through the vehicle’s firewall to the location
of the vehicle’s battery (or its main DC bus bar or stud). Use an existing access hole in the vehicle’s
firewall if possible.