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The Guardian Alert™ Backup Warning Device for receiver hitch applications installs easily. The four-step procedure is simple and is not invasive for most vehicles.

Before installing the unit, please check to see that your box contains:

1.) 1 Guardian Alert Hitch Mount Sensor
2.) 1 Power Cable
3.) 1 Indicator Cable
4.) 1 Notification Display

5.) 1 4”x2” Dual Lock SENSOR Stick Pad
6.) 1 1”x1” Velcro DISPLAY INDICATOR
          Stick Pad
7.) 1 Warning Label, Warranty Card,
           and Alcohol Wipe (not shown)


Installing The Guardian Alert™ Doppler Awareness System
WHEN WORKING INSIDE OR UNDER ANY VEHICLE INSURE THAT THE IGNITION IS OFF, TRANSMISSION IN PARK (NEUTRAL FOR MANUAL SHIFT) AND THE PARKING BRAKE IS ENGAGED.
The sensor wires can be installed through the interior of the vehicle (on the floor, ceiling or molding) or underneath the vehicle. The corresponding steps listed below may vary according to the location of the interior indicator and the desired installation of the wires.
Step 1
From underneath the rear of the vehicle. Find a location inside the rear bumper skin at the center of the bumper; level with the bumper crash bar, which is vertical. This may be a curved surface. Clean the area from dirt and grease with a rag. Attach the sensor using the 4” x 2” Dual Lock strip. If the surface is curved, cut the strip into two pieces 4” x 1” and attach the sensor at the top and bottom of the front face. The red and gray cables come out of the back of the sensor. The back of the sensor should face the vehicle. The front of the sensor is placed against the inside of the bumper skin facing rearward away from the vehicle. Bring the wires into the trunk or underneath the vehicle towards the reverse lamps using an existing hole or entrance.
Step 2
Power Wiring: Locate the end of the power wire that contains two internal wires (one red positive and one black ground). Remove one of the rear light housings and find the reverse light power and ground wire. For the best connection, it is recommended that one (1) inch of insulation be removed and these two wires soldered to the vehicle reverse light wiring and properly re-insulated. (There is no need to determine the polarity to correctly connect the power cord). Tape the connection to ensure insulation and that nothing comes disconnected.
Step 3
Place the interior display indicator in an area of the vehicle that is visible to the driver and within his or her range of hearing. Attach the interior display indicator using the 1” square Velcro stick pad. Prepare the attachment point and the underside of the display indicator with the alcohol wipe to remove any polish, dust etc.
Step 4
Locate the long gray display indicator wire and run it through or underneath the vehicle until it reaches the wire running from the interior indicator. Conceal all wires and secure them to the vehicle in an appropriate place using cable ties of required.
  • Use the cable ties to secure all cables up and away from moving parts or hot areas. Verify that the connector on the cable set does not hang to the ground when the sensor is removed for towing.
  • Check that cables were not cut or chafed on installation.
  • Install the warning label where it will not be damaged.

Troubleshooting
After making any changes to the installation or vehicle wiring, please return to step 1 and repeat the entire test to ensure that the unit is working correctly.

Testing Procedures
Please follow all of the testing procedures listed below to ensure that the unit is operating correctly.
Step 1

Set the parking brake. Turn the ignition switch on and place the vehicle in reverse. At this time, a green light will appear from the Interior Indicator to indicate the unit has been properly activated.

If the green light does not come on when the vehicle is placed in reverse, check the unit to ensure that it is completely and correctly installed. It is possible if the green light does not come on that there is not enough voltage to the unit. Check the battery with a voltage meter to ensure that there are at least 12 volts going to the system. Disengage reverse, start the engine and idle for 15 minutes to recharge the battery if required then repeat at step 1.

Step 2
Using a tape measure, mark off a distance of 18 feet straight out from behind the vehicle. Ask a person to stand there. The vehicle should remain stationary while the person begins to walk toward it from behind. When the person reaches a distance of 9 feet from the vehicle, the display should indicate a flashing yellow/green light. When the person reaches a distance of 5 feet from the vehicle, the display should turn to a flashing red /green light and emit a fast audible beep. When the person is within a distance of 3 feet of the vehicle, the display will show a solid red light and the beep should become continuous, warning the driver that an object is dangerously close to the vehicle.
Step 3
Now find a parking lot or similar open space where there are few or no pedestrians and vehicles. Have an assistant check the area for possible collisions and advise you or the operator when it is safe to reverse. Test the system reversing towards trash cans, curbs, lamp posts and walls.



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