Making Data Collection Easier
JAMAR
Technologies, Inc.
The RAC Plus I - Quick Start for Installation & Use
QUICK
START
What is the RAC Plus I?
The JAMAR Technologies Road Analysis Computer
(RAC) Plus I is an accurate, easy-to-use distance measur-
ing instrument (DMI) that uses state-of-the-art micropro-
cessor technology. It has been designed with features to
provide you with a versatile and functional instrument
that can be learned in a very short time.
How does it work?
The RAC Plus I is installed in your car along with a
distance sensor
. Distance sensors do the behind-the-scenes work of the RAC
Plus distance measuring instruments. Connected between your vehicle and the RAC Plus head unit, these sensors read and modify
the data coming from your vehicle and send a signal to the RAC telling it when to count distance.
There are currently three types of distance sensors that are used with the RAC Plus I – the AutoLink OBD sensor, the modular sensor
and the magnetic sensor. The simple breakdown of the three is that the AutoLink sensor is the newest and easiest to install (plug and
play, no tools required), but that ease of install trades a degree of accuracy. The magnetic sensor is the most precise, but much more
intensive to install than the AutoLink, while the modular sensor has accuracy similar to that of the magnetic sensor and is somewhat
easier to install, but is not compatible with all vehicles.
This Quick Start provides basic instructions for getting your RAC Plus installed and operating. For more detailed instruc-
tions, the complete User’s Manual can be downloaded at
www.jamartech.com/manuals
.
WARNING – Use of the RAC Plus I while driving could cause an accident, resulting in serious injury or death. As with any in-
vehicle instrumentation, the information provided by the RAC Plus I should be observed as part of the normal operation of the
vehicle. Changes to the RAC Plus I should only be done in a safe manner.
Installing Distance Sensors
The three different types of distance sensors each have their own separate installation procedures. Follow the instructions that came
with the sensor you received to install your particular sensor.
Modular Sensor
Magnetic Sensor
OBD Sensor
•
Do not
install wires near any object
that could cause stray pulses to be picked
up, such as the alternator, spark plugs or
engine coil.
•
Do not
install the wires or sensor near
any objects that will get hot, such as
the manifold. The installation wires or
sensor can melt if they are too close to
a heat source.
•
Do not
install wires near any objects
that could vibrate and cut the wires.
