We (as Alfie says) did a ML retrofit a couple of weeks ago.
It consists of
a) dismantle rear door panel work, left and right hand trunk upper and lower panel work,drop roof liner by 4 inches at the rear.
b) put new loom & camera in rear door, remove old one, and hook up above roof lining
c) Install new loom that goes from back left to front of car, and to fusebox on back right hand side. If you have TV it doesnt go to the front, just to TV tuner, but still power comes from the fusebox
d) Install the power supply for camera
Now with (c), you can do it as per factory, which involves removing the carpet (from in front of front seat backwards) - this means taking out the centre console, front seats and rear seat bases, door sills and lower pillar covers out - This lets you at the wiring ducts. I can do that (out and in again) in 3 hours assuming no hitches - but there always are. Plus its a good hour to do the rear door as you have to extract all the 14 clips that break , and cut your hands up on the sharp metal.
Although, if just installing the camera, I'd run the cable under the back seat instead of in the wiring duct, and the video cable up under the carpet on the left hand side - it will come to no harm there, and save 2 hours.
We did the whole lot out job, as also installed TV, reversing camera, full factory type rear seat entertainment system, linguatronic, had the car re-trimmed in the AMG nappa leather (still need to get the bigger front seat bolsters, on back order). The CD changer and iPod install is documented on
www.mercupgrades.com - i'll try and dig out some pictures of a stripped out ML at some point and post them.
R
ps, interestingly, to change the battery you have to take out the front seat and cut the carpet !! (or do most of what I said above) - lots of expense for ML/GL owners in 5 years time.
I'll dig them out later.
