Where do I find the Key Code?

On some of these vehicles you can find it right inside under the steering wheel, just by the driver door. You will have to get on your knees and stick your head around the corner under the steering wheel and it may be there. You might want to take a flash light with you. If its not there you can also look in the manual and there may be a card with the number. It should be 5 digits.

I put a lock and key switch in my mercury grand marques and it want start up ,can some one help me,