Rain Tracker Model: RT-50
Vehicle-Specific Installation Instructions
These instructions apply to these vehicles, which all have similar wiper systems:
BUICK CENTURY 97 - 05
BUICK REGAL 97 - 04
CADILLAC CTS 03 - 07
CADILLAC DEVILLE 00 - 05
CADILLAC SEVILLE 98 - 04
CADILLAC STS 05 - 07
CADILLAC-TRUCK SRX 04 - 05
CHEVROLET CAVALIER 95 - 05
CHEVROLET CLASSIC 04 - 05
CHEVROLET CAMARO 93 - 02
CHEVROLET CORVETTE 97 - 04
CHEVROLET IMPALA 00 - 05
CHEVROLET MALIBU 97 - 03
CHEVROLET MONTE CARLO 00 - 05
OLDSMOBILE ALERO 99 - 04
OLDSMOBILE AURORA 01 - 03
OLDSMOBILE INTRIGUE 98 - 02
PONTIAC BONNEVILLE 00 - 05
PONTIAC FIREBIRD 93 - 02
PONTIAC GRAND-AM 99 - 05
PONTIAC GRAND-PRIX 97 - 03
PONTIAC SUNFIRE 95 - 05
Wiring Diagrams and Drawings:
GM Type TWM Wiper Systems with RT-50
Troubleshooting procedure. Print out if needed.
Wire colors used in this vehicle:
+12V - WHT (YEL ON SOME)
MODE - DK-GRN
FAST - PPL
MUX - GRY
GROUND - CHASSIS
External Components Required for this installation
RESISTOR - 22K - Color Code: RED-RED-ORN
RESISTOR - 390 - Color Code: ORN-WHT-BRN
DIODE - 1N4004 - OR SIMILAR RECTIFIER
Special Rain Tracker Installation Notes for this vehicle:
This vehicle is wiper system class GM-TWM. The intermittent
wipe controller is built into the wiper motor cover, in
a motor/controller combination. The Rain Tracker is installed
between the wiper control switch and the motor/controller.
This is a depressed park system. That is, the wipers
park below the hood when not used. The wipers will come
up on the windshield when the Rain Tracker is on.
All wires except ground are available coming from the wiper
switch. They can usually be accessed by removing one or
two access panels (Kick Panels.)
For the Rain Tracker chassis ground, find a suitable chassis
ground. Be sure to scrape away paint as needed to get good
contact.
Note: Some vehicles have different wire colors for 1 or two wires.
Check with a multimeter for correct wire color application.
MODE - GRY & MUX - DK-BLU: Aurora 01-03 CTS 03-05 Seville 98-05,
Deville 00-01 & 05-07, SRX 04-05, STS 06-07, Bonneville 00-01
MUX - BRN & MODE - DK-GRN: Deville 02-04, Bonneville 02-05
SPECIAL TROUBLESHOOTING NOTES
Sometimes GM will have more than one Gray wire. You can check that you
have the right gray wire by putting a multi-meter into the connector.
(You do not need to cut the wire to do this) Put the system in
intermittent mode. The voltage should vary by a few volts as the
wiper cycle.
Also, on some GM: GM sometimes reverses the gray and green wires coming
from the switch. They then switch positions after the connector
coming from the switch. Check for this.
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Vehicle data file name: gm_twm_dp.veh
OEDES makes aftermarket rain sensors and rain sensing automatic wiper control systems for most cars, trucks
and vans.