DAVIS DriveRight Installation - VSS (8156, 8160) - Manual (Page 7)

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8hˆ‡v‚) Always use safety stands when working under a raised vehicle. Never work under a
vehicle supported only by a jack.
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I‚‡r) Make sure the harness cable and adapter cable can reach the DriveRight console
mounting location before making the following connections.
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Locate your vehicle’s VSS wire.
You can find the location of your VSS wire the website for Rostra Precision
Instruments: www.rostra.com. Click on Cruise Control and then click on
“Search Application Guide.” Enter the year, make and model of your vehicle.
The search results will include the VSS wire location and wire color. There
are other links to the Application Guide and the path to it does change from
time to time when they update their website.
I‚‡r) The web site “www.rostra.com’ is owned and operated by Rostra Precision
Instruments. Rostra does not provide support for DriveRight products. If you
have trouble finding the VSS wire, please contact Davis Instruments Technical
Support at 510-732-7814.
I‚‡r) Some base model vehicles with manual transmission and no cruise control may
not have the VSS module installed. Also, vehicles manufactured before 1992
may not have the VSS signal. Consult the service department at your vehicle
dealership if you are having trouble. If your vehicle does not provide a VSS sig-
nal, you can install a DriveRight 8156GD or a DriveRight 8156HD, both of which
include a reed switch-based speed sensor that you mount on the drive shaft or
CV joint hub.
! Tap into your vehicle’s VSS wire with a T-Tap disconnect. Use either a red or
blue T-Tap, whichever fits the VSS wire best.
" Strip the white VSS harness cable wire 3/16”- 1/4” (5-6 mm) and crimp on an
insulated male disconnect.
# Connect the white harness cable wire to the T-Tap.
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DriveRight requires an unswitched +12 VDC power source.
I‚‡r) The wire used for power and ground connections should be 22-18AWG or have the
same diameter as the red +12 VDC wire with fuseholder.
Locate an unswitched +12 VDC power source:
❏ Make a direct connection in the fusebox (recommended) using an extra
accessory slot in the fuse box or using a fuse tap connector (not
supplied).
07395.062 Rev E Body D121.fm Page 5 Monday, December 1, 2003 10:52 AM