A:AnswerThe camera wirelessly transmits to the monitor when it is powered. I connected the camera to the wires going to my reversing light. Every time the vehicle is put in reverse the monitor comes on and you can see what is behind the vehicle.
A:AnswerDoes it work while your car is on and after you turn the car off, it is not set? If this is the case, it is not retained in memory. Do you complete the full cycle of settings?
A:AnswerYes, George this kit would be compatible with your HHR. This kit is universal and will fit almost all vehicles. You just need power for the camera and a 12V socket to plug the monitor into.