Wireless Connection Test Kit: Tractor Testing

Tractor systems consist of a wireless receiver, monitor, DVR, and/or multiplexer to view and record the image received from its paired transmitter. The Wireless Connection Test Kit acts as a trailer’s camera and transmitter, allowing users to verify the tractor system’s functionality, wiring, and installation.

Wireless systems connect by sending a pairing signal over the shared power wire of the 7-way plug. The tractor’s receiver connects to the kit’s transmitter, and the tractor monitor displays the kit camera image or informs the user of an issue with the system or pairing.

Please note that powering the kit is not necessary while testing the tractor. Turning the kit monitor on will not affect the tractor testing, but the “Lost Link” message will display. View the monitor in the tractor for test results. 

1. Connect the tractor’s 7-way coil cable to the left port on the back of the kit case, labeled “To tractor”.
   
   • Align the notch on the metal plug downwards, as shown below.
     
2. Verify the tractor’s 7-way cable is connected to its 7-way socket.
   • Align the notch on the metal plug upwards.
3. Turn on the tractor’s ignition to power the 7-way circuit.
4. Visually verify the red “Power” LED and blue “Pairing” LED on the tractor’s receiver are lit.
   • If the receiver doesn’t power on, test the connection to the 7-way circuit and verify the vehicle’s circuit fuse is functional.   
     
5. View the monitor in the tractor.

If the test is successful, the tractor monitor will display the kit’s camera image. If the test fails, one of two system messages will display:

1. Lost Link – The receiver cannot reach the transmitter.
   • Verify the receiver is connected to the 7th pin blue wire of the 7-way.
   • Verify the receiver’s connection to the blue wire is uninterrupted.
     
     • • Circuit breakers and logic systems may obstruct the signal.
   • With the ignition still on, use a voltmeter to verify the center pin of the tractor’s 7-way cable has +12V.
     
     • • If no voltage is found at the center pin of the cable, verify the voltage on the tractor’s 7-way socket.
       • If voltage is present in the socket, use the test kit’s 7-way coil cable to verify the functionality of the OEM coil cable. 
         
2. No Input – There is no camera input.
   • This displays when there is a connection issue between the transmitter and the camera. If this message is seen on the tractor monitor, its connection to the transmitter—therefore, the test—was successful.
     • • Test the kit.   
         

To learn more about the kit, see the Wireless Connection Test Kit: Overview article.