User's Manual

46
CAS GPS Installation Manual Rev G1
2/17/2016
Input Power & Signal Connections
Ground
Ground pickup point is the vehicle chassis. A ring terminal on a designated
grounding point should be used.
Ignition Signal
Vehicle ignition should be protected by an independent 3Amp fuse. Although the
system does not draw operating current from this source, the vehicle’s circuit should
be protected against inadvertent shorts.
Basic Reverse & Forward Signals
Unless using a CAT Gear Decoder (see below) the reverse signal should be obtained
from the vehicle’s reverse buzzer or alternatively the reverse lights. The forward
signal may be wired from a suitable forward gear indicator, with the forward
negative signal is tied to ground. Pickup should be made on the output side of the
relays.
CAT Gear Decoder Reverse & Forward Signals (PROD0587 CAT B,C & D or PROD0724 CAT E & F)
For vehicles using the CAT Gear Decoder, Reverse and Forward signals should be
obtained directly from the decoders outputs observing the correct polarity when
connecting to the IVU. Basic Reverse & Forward Signal wiring is not required when
using the Reverse & Forward Signals from the CAT Gear Decoder.