I am trying to repair a 93 300zx first ten of vin 1n1rz24h7px. The mechanic before me could not get it out of 2nd gear he replaced the trans. I know that this car is electronically controlled. I can start the car and it will move in 2nd. There is a flashing light that says "security". My question is does this car have a type of security system built in that will disable the trans', if not then why can't i get power to the starter or trans. If you have a wiring diagram it would help. Thankyou, S