1992 Eagle 2000 GTX

1992 Eagle 2000 GTX 4 cyl Two Wheel Drive Automatic

We had to replace the ignition switch on this car. Since Mitsubishi no longer makes this part we replaced it with a used part which came with a key. After we installed the replacement part, we can no longer unlock the doors or trunk. Some suggest that the keys contain a security chip but when I asked at the local dealership they said this was not true. Even if they did contain a chip the doors locks are not electric. Any suggestions as to what the problem is?
March 6, 2010.

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