JUst FYI. I installed the same Blackview 900 2ch as James K and it is a nice camera. Rather than route the wires on the driver's side, I ran the back camera on the passenger side. The power for the front camera was routed on the passenger side and down the A-pillar to the fuse box in the passenger footwell. (It seemed easier than having to go through the firewall to tap into the battery.) Battery and Accessory taps were done with micro fuse taps. I opted not to spring for the power magic pro or aux battery. My truck is on parking mode for days with the camera keeping watch. The LVB does discharge but the HVB kicks in and charges it up when it gets low. The only issues I experience are the constant notifications of a power system drain. Just an annoyance.