after market radio loses power when i step on brake on 1999 Pontiac Firebird

sometimes comes back on when i restart,

by in Port Richey, FL on March 25, 2013
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3 answers
ANSWER by , March 26, 2013
after market upgrade to sound system maybe drawing to much power circut to keep up with. best to get connections checked and alternator tested for output. compare with system draw. it may also be the battery. if battery is not able to hold enough charge to run components, you may need to upgrade to deep cycle to keep up with system draw. double check and test everything related. audio tech. should be able to address as needed.
ANSWER by , March 26, 2013
Who installed replacement unit?
ANSWER by , March 26, 2013
how long has the radio been in? brand new? ck pwr source they may have tapped into the wrong wire