have a 2004pac with the "big dog" radio. took it in to have the alternator replaced and now the time display in the radio doesn't come on unless the time button is pushed. it used to be on all the time when the key was in the acc or on position. now only will come on if press the hr or min button to reset or if i press the time button. either way the time is only displayed for a few seconds, then goes off again. the dealer said this was a settable option, but i can't find any info on how to set. does anyone have any ideas