stupid stereo question

[75_chevy]

ok so when I turn my key off the stereo usually stays on for a few seconds before it shuts off, which I like because I have time to turn the key back on without interrupting the tunes. I was putting in Led bulbs in my dash and shorted the deal and blew a fuse etc. I replaced the fuse and for some reason when I turn the key off the stereo shuts off immediately. what could I have done to do this? I know it sounds silly but I would like to fix it lol. thanks for the help.
1975 c10 350/350


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[bd]

 If your running a capacitor, check its connections, circuit protection and power.