I just bought a 92 240sx coupe and the digital speedo and the hud doesn't seem to work. When i turn the ignition on right before cranking it the speedo comes on for about 2 seconds then goes off. Can anyone help me with this. Also i was reading on some post the these cars have limitors on 4th and 5th gears and they said to cut some wire to get rid of them. Any suggestions would be greatly appreciated. THanks