Finished fitting my air shifter today. It has the bottle and a mini-compressor in the tailpiece, and the solenoid is attached directly to the ram cylinder. It's wired through the horn button so that's it's switchable, you can have either the horn working or the shifter (but not both, cos it sounds crap when you are going up the track going honk honk every gearchange

). Bottom left of the first pic you can see the BTC ignition kill box

. I'll probably fill the bottle with CO2 and use a regulator instead of the compressor at a later date.
