12
Preparing the
Cables
IMPORTANT
: Do not remove the colored insulation from the wires.
1. Allowing an extra 25cm (10") for wiring ease, cut each cable to length.
2. Remove the red cover of the Junction Box. Set it aside along with the contents
of the box.
3. Carefully push approximately 100mm (4") of each cable through the
appropriate grommet (see Figure 5). To ease sliding, apply alcohol to the cable
jacket.
4. Strip 60mm (2-1/2") of the outer jacket and foil shielding from each cable.
5. Sensor Cable—Separate the shielded pair from the other wires within the cable
and remove 38mm (1-1/2") of the foil shielding.
6. Protect the cables’ foil shielding from causing a short circuit inside the box by
using heat-shrink tubing around the jacket where the wires emerge from the
cable. The tubing must overlap the wires a minimum of 6mm (1/4"). Use a heat
gun to shrink the tubing.
7.
Sensor Cable
—The blue and brown wires are not needed. Cover the ends
separately with heat-shrink tubing. Use a heat gun to shrink the tubing.
8.
Serial Cable (RS-232)
—The red wire is not needed. Cover the end separately
with heat-shrink tubing. Use a heat gun to shrink the tubing.
Heading
Figure 5. Cables inserted in the Junction box
single wire (5)
Humminbird®
tab
small grommet (3-5)
Display
Sensor
Power
Source
large grommet (5-7)
serial
cable
cable
power
sensor
cable
(RS-232)