I just bought wireless camera from china through ebay it came with no instruction on how to install it.

I tried to play with it & test how it work.

I connect the camera directly to the car battery to give it power, connect the monitor and the receiver to the car battery too, the monitor show no signal of receiving a picture (the transmitter show red light on it indicate there is power & the receiver has a blue light to indicate power)

Now I connect the video outlet to the video inlet in camera the picture came on the monitor.

It seem to me that the camera transmitter & the monitor receiver are not communicating.

Any suggestion please to fix the problem before?