more importantly.... does it work ? 
thats looks like a pretty complicated circut for what it does... does the buzzer play a tune ? 
Yeah it does! A ding dong sound...tuned to sound just like the Vectra
And yeah...works great! Only problem is Ive not got anything sticky enough to mount to the speaker in the recess above the pedals...so atm its just stuffed in the carpet which makes it sound quite muffled.
