DCL refers to data control link, somtimes the plugs in back lose the connection. Follow this link, the info should help. It worked on my 92. http://www.lincolnsonline.com/tech/00086.html
AnswerThis should help. http://www.lincolnsonline.com/tech/00086.html The only fix is to have the cluster reworked. Search Ebay for DCL errors. It can be fixed for $50 - $60 bucks
Assuming you mean the instrument cluster lights, consult this link: http://www.lincolnsonline.com/tech/00086.html If you are referring to other lights (radio, switches, etc.) those are not serviceable. You have to replace the unit that's failing.
DCL refers to data control link, somtimes the plugs in back lose the connection. Follow this link, the info should help. It worked on my 93. http://www.lincolnsonline.com/tech/00086.HTML Loose connection is not the problem. It may at best temporarily fix the issue but the problem is with the electronics inside. Had a guy on eBay fix it for $60. Have never had problems again