1981 cadillac eldorado
 

I purchased a 1981 cadillac eldorado 368 6.0 and my ecm blew out and so I purchased a new one at auto zone that did not include proms, so I installed the new ecm and tried to use my original proms but it did not work. I am looking for information on how to locate the correct proms, locations where they can be purchased any information will help....Thanks