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INSTALLING THE ULTIMA
Before mounting the Ultima, gather the parts you need; Ultima, gimbal mounting bracket,
mounting hardware kit, power cable, and transducer cable. If the transducer cable is not long
enough for your installation, see "Accessories" earlier in this manual for information on the EC-6
10' extension cable.
Next, consider where to mount the Ultima_ The gimbal mount offers mounting capabilities
for the top of a shelf or the bulkhead (and lets you tilt the unit forward and backward for ease of
viewing and operation). To choose the best location, consider the following:
• The mounting surface should be adequately supported to protect the Ultima from excess wave
shock and vibration.
• The mounting area should allow at least 2" clearance at back, sides, and top of the unit for
connection, air flow, and ease of removal.
• Any VHF radio you have may incur some degree of interference with the depth sounder.
Humminbird depth sounders are designed to minimize this interference, although it is best to
route the transducer cable and antenna cable as far away from each other as possible, for
example, on opposite sides of the boat.
After you have determined the best location for your Ultima, proceed with the instructions on the
following page.
1. Set the gimbal mount on the mounting surface.
2. Mark lib" holes for the mounting screws.
3. At least 3" behind the bracket, mark a 3/4" hole to run the cables through.
4. Set the gimbal mount aside and drill the holes as marked.
S. Mount the bracket, using the mounting hardware supplied with your Ultima.
6. To connect the power cable to the 12-volt DC power source, wire the Ultima through your fuse
panel with a I -amp fuse (not included).
If your boat does not have a fuse panel, you can wire the power cable to the battery with an in-
line 1-amp fuse and fuse holder (not included) in the positive wire, as shown on the following
page. Do not connect directly to the battery without a fuse. Attach the black lead to the negative (-
) terminal, and wire the red lead through the fuse to the positive (+) terminal.
Note: Do not use any power cable other than the one provided with your Ultima. However, you
may lengthen the cable with 18 gauge wire.
7. Pull the transducer, power, speed and temperature cables up through the 3/4" hole behind the
gimbal bracket, and connect them to the back of the Ultima. (The power cable is identified by a
"1" on the plug, the transducer cable by a "2", the speed cable by a "3", and the temperature
cable by a "4" on the plug).
8. Push any excess cable into the hole.
9. Mount the Ultima on the gimbal bracket by loosening the mounting knobs and slipping the unit
into the bracket. Be sure to keep the rubber washers between the bracket and the unit. Tighten
the knobs to hold the Ultima in viewing position.