After a whole heap of mucking around, I finally got around to installing my on board air system. It's effectively the same set up I had in my previous ute, minus the air horn (might find space for that later though

).
The system comprises of an ARB CKMA12, hooked up to a small air tank I got off an old Mack at a truck wrecker for $50. It all fits neatly up under the tray, above the spare where it's pretty well protected, and I extended the inlet line up behind the left tail light where it should be safe from water and excessive dust.
The old compressor is over a decade old, so it was in need of some TLC. I ordered the parts I needed to spruce it up, but I'd left it too late, and they didn't arrive until after we'd left on this year's holiday. Luckly my brother was leaving a week later, so he picked up the parts, rebuilt it for me, and I finished the install on the road when he met up with us in far North Queensland.
At first everything worked the way I'd hoped, but the second time I ran it, something didn't sound right, and before I could turn it off, it overheated, overloaded the circuit, and blew the fuse.
Initially I thought my brother must've done something wrong when rebuilding it, but my assumptions turned out to be wrong.
When I'd run all the hoses at home, I'd capped the ends of them to keep water, dirt, and dust out. At one point though, I realised I needed to make an adjustment, so I'd removed the capping, and I managed to forget to put a cover back on the inlet line.
When installing the freshly rebuilt compressor, I realised what had happened, so I shook all the dirt out and hooked it up. I thought I'd been plenty thorough, but it turns out I hadn't.
After buying a whole new compressor and swapping them over, I pulled the rooted compressor apart to see what had happened, and the moment I removed the head, a large quantity of sand fell into my hand. The new piston and cylinder were both ruined after less than five minutes of run time. Oops.

We removed the whole dirty hose at this point, cleaned it all properly, and reinstalled it. An expensive lesson considering the replacement compressor was a little over $300 (after pity discount), but it's fixed now, so all is good.
The parts to rebuild the old unit will be around $50 (again), so I'll order them, and keep it as a spare for the next time I screw something up.
While I had everything out of the tray, I thought I'd get a couple of photos of the tie downs I installed last year.
I went with removable "bed bolts" by Progrip. They come in a couple of sizes, but I can't remember what I went with off the top of my head.
Here's what they look like out..
Half in..
And from beneath..
They also come with little plastic lugs that go in the holes when you want to leave the eyelets out to stop the threads filling up with crud.
I think that's everything at this stage.
P.S. Excuse all the missing images in my earlier posts. Photobucket has changed, and I'm not about to start paying for the thirty or forty odd images I was storing there. I'll upload them elsewhere and fix the links soon.