Tbone55, that "Haloview Power Booster and Filter" would be connected to the camera's power cable and the connection on the trailer where the camera is mounted. Basically, it will go in-between the camera's power plug and trailer's camera mount power plug. You may need to secure/adhere the small booster on the external wall of your trailer.
On a side note, there have been other fixed at the main trailer plug on the vehicle and the trailer's 7-pin connector. Overall, the problems lies with GM's usage of PWM (talked about earlier in the forum), which caused the camera to drop power. PWM is a good and more advance design for safety and reporting to the vehicle's computer(s); but, with these cheaper chinese-made cameras the PWM system wasn't designed for their compatibility. I believe future camera designs may take this into consideration as technology advances more. I make this comment since I'm an engineer for some government applications, but not for automotive. The concept can still scientifically apply.
Hope this helps.