Gday all, i have just reinstalled my original head unit into my VX Clubby (Sold the car). Connected battery, there is power to unit (Time and flashing red light going),but it wont allow me to enter the code number ?? It doesnt even come up with the cd1 , or whatever message it is to enter code. I have disconnected battery for an hour, made no difference ?? Any hepl would be great. Thanks In Advance