Power windows wont work

Ive just install a new radio perfectly. During the instalation i blew the power window fuse, i changed it and now the windows still dont work.
WHY???????????

May have damaged the relay. Check it first

I am running into the same issue except I still can't get the windows and radio to work. The windows quit working after I pulled out the radio/DVD (7" monitor), because it stopped working. All the fuses have been replaced and I have even interchnaged the relay switches with my f150 to make sure they were good. I still can't get anything, windows or radio/DVD, to work. Any suggestions would be appreciated. Thanks