Bruce is correct, the video won't open, although the audio worked for me.
I've tied the grey and black tanks together with valves for each tank into a single bayonet fitting. I also moved it out closer to the side as well, the last place I want to be on my knees is at the dump station.
I also moved the sewer hose holder to the back bumper because it was a pain to get to and it interfered with the plumbing work. Stick with ABS pipe and fittings, the transition glue from ABS to PVC doesn't work very well.
I do a lot of National Park hopping and 12gal of grey water capacity is pretty useless. I custom built an additional 20 gal grey water tank and tied it into the existing tanks, so I can last 4 days with a couple of the grand kids before I have to hit the dump station.