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Well I finally got it done. After years of threatening to do it, I finally got off my ass and got the camera system built, installed and working. I have six cameras mounted and running now. One looks down and to the rear it's mounted on rear edge of the bed cover. Handy for backing up as I can see within 2 feet of the rear bumper. Another is looking straight back and is mounted in the hitch receiver. It is for looking further back in the rearward direction and is pointed level with the truck. Yes, it's removable for when I want to use the hitch as a hitch. In fact I can then relocate the camera to the rear of what ever is being towed with an extension. I have two cameras on the main crossmember one is centered just under the transfer case and in line with the drive shaft. It looks at the rear axle. With it, I can see the entire rear axle, the drive line (cool to see the drive shaft spinning while you drive), the gas tank, muffler i.e. the usual under carriage rock bait. The other camera on the crossmember is off center on the drivers side to keep and eye on the front diff and drive shaft. There is another camera mounted within the front bumper that looks forward and down a tad. With that one I can see where I'm going if climbing up a steep obstacle or cresting a hill. The last one is mounted inside the windshield right behind the rear view mirror. It's function is enhanced night vision as silicon imagers are naturally responsive to near IR illumination it sees better at night than we do. Standard halogen lamps put out tons of near IR so is ideal for a silicon based B&W camera. That one will be good for off roading at night. The undercarriage cameras work well with the rock lights too. I have an input for plugging in a tethered random camera, probably with a magnetic mount. There is also an additional output with separate camera selector switch for connecting a second monitor or recorder and three spare selector switch positions, 10 in all. One will be for a wireless camera that I will get around to when time permits. Maybe I will add a couple of cameras looking down the sides with the other two switch positions. The main driver monitor is mounted in the driverside sunvisor. I need to swap out the visor monitor because is is a real POS. It has a crappy subcarrier PLL the does not properly decode color from some of the cameras. It has no aperture correction (sharpness) or contrast control either. I also do not like the push button adjustments as it takes too long to tweak, standard old knobs work much better as they stay where you leave them. Every time the ignition is switched off I have to turn it back on and readjust the picture controls. However, for now it works well enough to use.