Finally put the car on the road after two years of storage and first run out the dimmer switch punked out with alot of smoke. Dash lights are not working now, all others are fine. Where can I buy a new switch in Canada?

Second problem is my fuel gauge not working right, have less then 1/4 tank and it is reading way over full. I have read that this could be a ground issue, but cannot find the ground wire with out dropping the tank.

Last issue is my speedometer only goes to 140KPH, did the Firebirds/TA's come with a higher readout in KPH? And where might I find one. Failing that is there an aftermarket solution?