Where do you find a factory radio wiring diagram for 1992 buick lesabre?

You can find a factory radio wiring diagram for a 1992 Buick LeSabre in the vehicle's owner's manual. If you do not have access to the owner's manual, you can also find the wiring diagram online at various websites. To obtain the wiring diagram online, simply search for "1992 Buick LeSabre radio wiring diagram" and you will find several websites that offer this information.