there are two methods, one is simple like mine, and other is more complicate but better overall integrated like member spano set out in one of his threads by making his own circuit etc but he didn't follow though on that,
in my i just connected the front camera installed in logo using rcas to the AV input in the headunit, i can then engage the camera using shortcut on home screen or if you have steering controls using source button quickly, the front camera works at any speed and when you put the car in reverse the back camera automatically comes on. its been working well, i have front camera installed in two more of my other cars and i find it usefull in parking, you dont have to install it in monogram you can mount in on the lower grill in the bumper, i have do so in my other car and i find it more usefull there as you can estimate footpath height from that position and in dense foggy weather its easier to see road markings with foglights turned on using the camera mounted lower in the bumper.
its a very simple DIY any anybody can do it you just need a av input in any headunit you got and a front camera of course, either this monogram shape one or a round one from a harrier or prado, you can find them in market.
