I thought a user with over 12000 posts might've picked up on how it's wired, and judging on how i've written my first post, how it's wired is irrelevent as i've given my explanation on what i want the code to do.
But, like i mentioned in my post, i have a post under 'project guidence' if you care to take a look.
Basically, i have two relays, one for ON and one for IGNITION. i have a brake switch with a pull up resister (as if it was a push button) and another relay which when switched by the vehicles alternator, closes the contacts on another pull up resister switch.
Regards, Matt.