Installation Manual

Table Of Contents
14221-1850-4000, Rev. A
67
Alternately, drill a new hole approximately -inch in diameter and install a small rubber grommet to
protect the wire from chafing on the hole’s sharp metal edge.
To prevent fumes from entering the passenger compartment, any
hole/grommet/wire combination in the vehicle’s firewall must
silicon-based sealer before completing the installation.
5. Protect the red wire and the Ethernet cable from possible chafing where necessary. Tie and stow as
necessary.
Battery Ground WARNING! Before making connections to the battery’s positive
post, carefully disconnect the battery’s negative (ground) cable(s). This will prevent
tools or other metallic objects which come in contact with the battery’s positive
terminal from shorting to vehicle g
explosion!
When disconnecting the negative cable(s), cover/insulate the positive post(s) if it is
not already so a tool cannot short between the posts. Some vehicles, such as those
with diesel engines, have more than one battery; in this case, disconnect the negative
cables at all batteries.
Radio and Control Head fuses should not be installed until all wiring is complete.
This will prevent the radio from powering up prematurely and/or causing an in-rush
of current that could lead to shorting of the battery, sparks, or even fire.
Do not install any wiring or fuse holder over or in the near vicinity of the vehicle’s engine.
Excessive engine heat can cause permanent damage to these components and can lead to
intermittent electrical connection to the battery.
6. Obtain the orange-wired blade fuse holder included with the DC Power Cable.
7. Observe and follow the previously presented Battery Ground WARNING!
8. Cut the red wire to the required length for connection to the battery’s positive (+) battery terminal (or
the main DC bus bar or stud).
9. Strip the wires coming from each fuse holder approximately ⅜-inch.
10. Cut the red wire of the DC power cable and strip ends of the wires approximately ⅜ inch.
11. Slide heat shrink over end of each wire.
12. Place the yellow splice connectors on the DC power wire and securely crimp.
13. Insert wires of fuse holders into the splice connectors and securely crimp.
14. Slide heat shrink down over splice connectors and use heat gun to seal.
15. Label this fuse holder and red wire appropriately (e.g., “XL Mobile Radio Main Power: 20-AMP
FUSE”).
16. Do NOT install a fuse into the fuse holder at this time.