Electrical problem
1994 Pontiac Sunbird 4 cyl Two Wheel Drive Automatic 147000 miles

I have a 1994 Pontiac Sunbird. Battery and Altenator both tested good. When you turn the key nothing happens. No click, or any sign of the car trying to turn over, but the lights, radio, and everything else work just fine. No dimming of lights or anything. I got it started once by wiggling the shifter while in neutral...it lasted for about three days starting, but now I cant seem to get that trick to work again. Not sure if its the starter, but if it was the starter, wouldnt it at least click or try to turn over? So, maybe ignition, or transmission switch? Anything intel you guys have would help, and be greatly appreciated, because I am completely lost with this issue...Thank you!