Time for an update... a few parts arrived from Demon tweaks today - very good prices and fast delivery, but with such a wide selection on their website it's compulsive browsing. Website could do with a bit of work, but it does the job!
I've done a reasonable amount of research, into the wiring and plumbing aspects of the safety kit. Essentially you need a cut off switch that kills the live electronics of the car, which can be activated by yourself easily and also the marshals outside the car. You also need a plumbed in Fire Extinguisher with the same mechanisms.
Wired up the horn away from the wheel - otherwise you turn the wheel and the wires get twisted! This will be a push button on the dash somewhere. Also cleared out Halfords and Homebase for a few more tools and supplies like heat shrink tubing, connectors etc.
Helped myself to plenty of youtube tutorials on soldering and splicing / general wiring.Bit of extra wide heat shrink on this and that's one end done! You can see wire but honestly it's impossible to pull apart - plenty of liquid solder in the hole then push the wire in, leave it set, jobs a good 'un!
Next update will be the car much cleaner inside after I attacked it with some spirits and a tea towel! Also booked the car in to get the sunroof welded and the sunroof cage removed this weekend. Pics will follow.