when i turn key switch nothing happens, ignition lights are bright

off, acc, on, and start----nothing happens? like you never put the key in at all? or is it just the start or on position? help me too narrow it down a bit, buddy~

Since the ignition lights are bright, it could be a failure of the starter motor. Check for voltage on the small wire on the starter when the key is turned to "Start"

Check loose solonoid nut