Ok so I made a quick vid as Jake asked for one on another thread and I cant find where that was now. I got this heater off ebay for £51 - Gas bottle, regulator, hoses, and bits £40. Installation -£FREE - if you can tie your shoe lace you can fit this. Excuse the mess of the back of the van it's cleaning day. Hose from pump (Shurflo or other brand) connects to 'water in' on the heater 'Water out' on the heater connects to the hose reel Gas of course goes to the gas bottle. Really is that simple.