Vehicle-Specific Installation Notes

Rain Tracker Model: RT-40A
Vehicle-Specific Installation Instructions
The instructions included with the product tell you how to install a Rain Tracker. This page gives special vehicle-specific information. Print this page using your browser's print function.

Application Vehicles
These instructions apply to these vehicles, which all have similar wiper systems:

WORKHORSE MOST RV 88 - 03

Wiring Diagrams and Drawings:

Most Workhorse RV-
RT-40A - HSS (Hot Side Switching)- Included with product, so print only if needed.
Troubleshooting procedure- Print out if needed.

Wire colors used in this vehicle:

+12V - LOCATE
GROUND - BLK
FAST - PPL
SLOW - GRY
CAM - GRN/BLK
WASH - PNK
INT1 - BRN/WHT
INT2 - BRN

Special Rain Tracker Installation Notes for this vehicle:

Write the wire colors of the vehicle on the HSS drawing, and follow that
when you wire up the Rain Tracker. Use the factory drawing as a reference
to help you find the wires. Some models and years may vary slightly in wire colors.
Factory drawings can be wrong, so, confirm wire colors with a multimeter.

The FAST and SLOW wiper system wires are available at the wiper switch. They
can usually be accessed by removing one or two access panels (Kick Panels) and,
possibly, the shrouds surrounding the steering column. Locate +12V and GND.

FIND +12V
For Rain Tracker power (+12V), locate a source of power hot in accessory
or run. Power source should be min. 12-16ga. wire on a 15-25A circuit. This
can be one of the +12V sources as shown on the diagram, or some other accessory
source. The cigarette lighter is often a good +12V source.

FIND CHASSIS GROUND
Find a suitable screw or bolt on the metal chassis of the vehicle to use as the
Rain Tracker ground. Scrape away paint as needed for a good connection.
Use a multi-meter to verify that the ground connection is at most a few ohms.
The cigarette lighter can also be a good alternate for ground and/or power.

This vehicle is wiper system class GM-SWM. 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.

The RT-40A does not utilize the FAST windings of the wiper motor. Please disregard any references
to FAST that appear in these instructions.
The Rain Tracker Model RT-40A can sense through windshields with thicknesses between
0.12" and 0.47".

The Rain Tracker wiper control system works in parallel with the existing wiper system, so the existing manual control modes are not affected. This page generated by vehicle data file name: workhorse_rv.veh