Installation Guide (8126GD, 8126HD) Manual
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DriveRight GD and HD use a a reed switch and rotating magnet to sense vehicle
speed. The speed sensor mounts on the driveshaft for rear wheel drive vehicles
or on one of the in-board CV-joint hubs for front wheel drive vehicles. Each time
the magnet passes the reed switch, the speed sensor sends a signal to console.
The console uses this signal to calculate vehicle speed, distance traveled, and
the rates of acceleration and deceleration.
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The list below and the wiring diagram on the next page provide an overview of
DriveRight GD and HD installation.
Mount the speed sensor underneath the vehicle.
Run the sensor leads under the vehicle and into the vehicle cabin.
Connect the harness cable power, ground and speed sensor leads.
Connect the harness cable to the adapter cable.
Connect the adapter cable power, ground, and digital input leads.
Mount the DriveRight display on or near the dashboard and connect it to the
adapter cable.
Test the installation.
Calibrate the DriveRight speed readings. Refer to the DriveRight User’s
Guide for instructions.
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Davis Instruments strongly recommends that DriveRight be installed by ASE
(Automotive Service Excellence) certified technicians or professional automotive
mechanics. Improper installation may damage your vehicle and possibly cause
accidents or injuries. If your DriveRight is installed by a professional, use the
“Installation Checklist” on page 17 to check the installation.
& Installing DriveRight can be hazardous to both the installer and to the vehicle electrical
system. This manual assumes you are aware of the inherent dangers of working in and
around a vehicle and have a working understanding of electricity. If you are uneasy
about installing DriveRight, please have a qualified professional do the installation.
Davis specifically disclaims any liability for injury or loss resulting from the installation or
use of DriveRight.
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Before you begin, please review the planning considerations listed below and
think through your installation. A little planning beforehand will save you time,
frustration, and parts.
❏ Determine the DriveRight console mounting location. (Procedure 4)
Knowing the console mounting location will help you decide where to con-
nect and route the harness cable, the digital inputs, and the sensor leads.
❏ Determine the mounting locations for the speed sensor magnet and reed
switch and how to route the sensor wires into the vehicle. (Procedure 1)
07395.043 DR GD Inst Rev D Body D146.fm Page 4 Monday, December 1, 2003 12:02 PM