Hope Karl doesn't mind me leaving this here. I don't know if any one has mentioned it elsewhere.
I found an error on the parts list for the 12v Panel light (the parking break light).
The part is listed as a 22mm cut out pilot light in the required hardware, but the cut out itself is only 16mm.
Am loving the plan so far. I've printed all my parts (took 2 weeks) and got all my components ready, but I'm reprinting a couple of the handle parts again as I wasn't happy with my first choice of white PLA - a fibre one from Protopasta. I'm redoing them with PolyMax now.
If I come across anything else I'll list it here.