National Fleet Tracking NFT-1175 Installation Manual - page 7
Confidential Page
7
6/23/2014
CABLE INTERFACE (Refrigerated Trailer Option)
Main Harness Connections in Detail
RED and White (+) 12volt Input
Locate the Red wire and the White wire found on the cable connected to the
GPS unit. The red wire AND the white wire must be connected to a 12-volt
source. We recommend the positive side of the battery for the refer unit.
BLACK (-) Chassis Ground Input
Locate the Black wire found on the cable connected to the GPS unit. The black
wire must be connected to a solid chassis ground uninhibited by paint or plastics.
We recommend the negative side of the battery for the refer unit.
TEMPERATURE SENSOR WIRING
RED
Locate the RED wire from temperature sensor, this will be connected to the
BLACK wire on the GPS unit.
WHITE
Locate the WHITE wire from the temperature sensor, this will be connected to
the WHITE/BLUE wire on the GPS unit.
NOTE: If you need to extend the wires on the temperature sensor we
recommend using CAT-3 phone cable and phone style splices.