We repaired an Olds that was having intermittent security system issues...............IIRC it was the white wire that ran underneath by the pedals, but it could be a different color for other makes, not to mention you need to know the resistance range for the vehicle in question.
With our ford that is chipped they just copied the one and only key we had and took like 5 minutes. I'll try to remember to ask my wife where we got it done....it was in the metro area but I don't remember who did it for us right now.




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