Technaxx TX-110 User Manual page 6

Connect the black connection cable of the wireless
transmitter to the negative pole of the reversing light.
transmitter to the positive pole of the reversing light.
Installing the monitor
Attach the suction cup to the windshield.
Connect the monitor to the electrical system (onboard voltage).
Use the DC 12V connection cable or alternatively the connection
cable for direct connection to the electrical system (onboard
voltage).
If not already preset, switch the monitor to channel 4.
Set the camera at an angle where you have a good view to
the rear, depending on the height of the license plate holder from
the ground. The displayed lines on the monitor give you an
indication of the distance. Definitely control the distance with a
folding ruler.
Then tighten the screws on both sides of the camera.
Connect the red connection cable of the wireless
1 Hollow connector to the monitor
2 Connect black to vehicle mass
3 Connect red with +12V