Right, this probably won't be ideal for you, but I fitted this about 3 years ago with whatever I had laying about at the time.
Its worked perfect without fail, but it looks bodgy




Just noticed I've got some nice rot inside the boot lid too -
awesomeThe rubber bandy bit is to pull the solenoid back to normal position after firing. As I used a spare normal door lock pusher, it doesn't return to centre - hence the rubber band.
The metal wire is just so I could mount the popper transversely, and it takes less effort for it to open because its a 'pully' type system, physicsy stuff and all that.