Rain Tracker Model: RT-50
Vehicle-Specific Installation Instructions
These instructions apply to these vehicles, which all have similar wiper systems:
CHEVY-TRUCK EXPRESS 03 - 07
GMC-TRUCK SAVANA 03 - 07
Wiring Diagrams and Drawings:
RT-50 with General Motors type LZ wipers
Troubleshooting procedure. Print out if needed.
Wire colors used in this vehicle:
+12V - LOCATE
GROUND - BLK
FAST - DK-BLU
MUX1 - GRY
MUX2 - PNK
External Components Required for this installation
RESISTOR - 390 - Color code: ORN-WHT-BRN
Special Rain Tracker Installation Notes for this vehicle:
+12V in accessory or run is not available at the wiper switch-- find
suitable source. (Good choice can be cigarette lighter.)
Alternative: YEL wire going to REAR wiper switch is hot in accessory or
run for many.
In some, the DK BLU FAST control wire is DK-BLU/WHT directly off the switch,
and changes to DK-BLU at the connector coming from the switch wires.
Check the Ground-- this can alternatively be BLK, BLK/WHT, or TAN. If you are
not sure you have a good ground, use a chassis ground.
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Vehicle data file name: gm_lz_c1.veh
OEDES makes aftermarket rain sensors and rain sensing automatic wiper control systems for most cars, trucks
and vans.