Theft light

[SHADYreefer]

I tried to replace the radio in my 2000 mustang. When removing the old radio the theft light began blinking. The new radio wouldnt work. I reconnected the old radio for a temporary fix, but that won't work either now. The theft light is still blinking. Please help me!

 

[Noobz347]

Go to Crutchfield and get the appropriate harness, if you haven't already.