GTT Opticom GPS System Installation Manual page 22

Intersection Equipment Installation Instructions
Replace the wiring cover and tighten the screws.
Orient the radio/GPS unit so that the cable
retainer is facing an area from which vehicles will
NOT be approaching.
Tighten the locknuts on the nipple/pipe to secure
the radio/GPS unit so it will not move.
Finish routing and securing the cable. Use cable
ties as required. Keep the cable lower than the
entry point or use a drip loop.
Table 5-1. Radio/GPS Unit Terminal Block
Pin Index
Pin Wire Color
1 Yellow
2 Yellow Black
3 Blue
4 Blue White
5 Orange
6 Orange Green
7 Brown
8 Brown White
9 Violet
10 Violet White
11 Bare
Function
Radio transmit (+)
Radio transmit (–)
Radio receive (+)
Radio receive (–)
Radio clock (+)
Radio clock (–)
GPS power
Common
Radio power
Common
Shield drain wire
19