[hiyabradHO]

What is the correct factory set up for a 1971 Trans Am for Locks and Keys?

Was the door and ignition keyed the same with the square key and the glove box and trunk keyed the same with the round key?

Was “A” and “B” the correct letter designation for the keys?

Thanks.

['ol Pinion head]

Yes, "A" was door & ignition key, "B" was trunk & glovebox for '71 models.

4 years later, 1975, the codes repeated, but new for '75 models, the square headed "A" key was only used for the ignition, same deal for '79.