Cadillac Repair: 1991 brougham rwd, dash unit, correct pin

Question
LED gage cluster dims out. when I tap on it or smack the dash to the right of it, they turn back on, sometimes stay on and sometimes it takes a few times. This is the 2nd car of this make and model that has done this to me when they pass 100k miles or so.

Answer
Welcome to one of the most common Cadillac problems. Pull the dash unit and check ALL the electrical pin connections for the correct pin specifications and if OK, Send unit out for repair. You can obtain all the correct readings for all the pin connection readings by E-mailing: onlineautohelp@msn.com