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Chapter 2
DC Power Cable Installation
2.1 Planning the Power Cable Installation
The 10 foot (3 m) DC power cable shipped with the radio should be long enough to be installed in
most vehicles. Take the following precautions before you begin:
• Whenever possible, avoid routing the cable above the catalytic converter.
• Use grommets whenever a cable has to pass through a hole in a metal panel.
The following table lists power cables available for this radio:
2.2 Power Cable Installation Procedure
Begin the power cable installation as follows:
1. Determine a routing plan, keeping in mind where the radio is to be mounted.
2. Locate an existing hole with grommet in the vehicle fire wall, or use a 3/8-inch (9.5 mm) bit to drill
an access hole in the fire wall. Install a grommet with a 3/16-inch (4.9 mm) inside diameter into
the hole to protect the power cable.
3. From inside the vehicle, feed the red and black leads (without the lugs attached) through the
access hole and into the engine compartment. (See Figure 2-1.)
CAUTION: This radio must be operated only in negative ground electrical systems.
Operating the radio on a positive ground system will cause the cable fuse to short-circuit.
Check the vehicle ground polarity before you begin the installation.
Table 2-1: Power Cables
Number Description Rating
HKN4137_ Low power cable to battery 1-25W; 15A fuse; 14 AWG 3m
HKN4191_ High power cable to battery 40-60W; 20A fuse; 12 AWG 3m
CAUTION: Improper handling with the power cable may short to ground. Ensure that during
radio installation the power cable fuse is removed.
CAUTION: Be very careful not to damage existing wires.
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