Tifached

Ok i posted a while back about my tuner just staying at the "turn key on" screen. It has to be the anti theft system, theft light is flashing when key is turned to ON with tuner plugged in. Does the anti theft system run to the stock cd player? i have an aftermarket deck, but there is one plug that isnt plugged into anything. Maybe i got a wiring harness for an older mustang? i just had keyless entry/alarm system put in to see if that would fix it, didnt work. cd player works fine though. any ideas about fixing the anti theft would be greatful. thanks in advance.

Tifached

bump. The anti theft is making it to where the tuner isnt getting a signal that the car is turned to ON