GTT Opticom GPS System Installation Manual page 21

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Screw the nipple/pipe at the base of the radio/GPS
unit into the threaded NPT mount. Use pipe
thread tape to waterproof the joint.
Do not tighten the locknuts yet.
Disassemble the weather-tight cable retainer and
route the cable through the compression nut,
plastic washer, rubber bushing, and into the cover
as shown in Figure 5-6. Leave approximately 4
inches of cable inside the cover and tighten the
compression nut to secure the cable.
Strip approximately 3 inches of the outer jacket
from the end of the cable. Be careful not to cut
the wires inside. Make sure the outer jacket is
held in place by the rubber bushing.
1. Intersection radio/GPS unit
2. 11-pin terminal block
3. Wiring cover
4. Cable retainer
Intersection Equipment Installation Instructions
Figure 5-6. Model 1010 Radio/GPS Cable Installation
Strip 1/4 inch of insulation from each wire.
NOTE: It is very important to not strip too much
insulation, which may lead to short circuits; or
too little insulation, which may prevent the wire
from making good contact.
Place each wire into the appropriate hole in the
11-pin terminal block and tighten the screw to
secure the wire. The label on the terminal block
shows the color of each wire. Table 5-1 also
shows the terminal block pin number, wire color,
and function of each wire.
The terminal block may be removed to allow
easier connections.
5. Rubber bushing
6. Plastic washer
7. Compression nut
8. Radio/GPS cable