Ignition lock cylinder install

If you look close at the lock cyl...there is a brass pin.. that needs to go past acc, in order to instlall... Put the key in it and turn it to acc...then look at the brass pin... Depress the pin a little with a pic.. and continue to turn the key past acc.. and it should find the correct detent in the cyl... Now.. push cyl into the switch and turn clockwise after it hits bottom... Hope that helps...