Hey everyone,
I have a 2003 Honda accord EX-L that has 171,000 miles on it. I had just replaced the starter, alternator, and batterty less than 2 years ago. and just recently I had noticed that when I have my music playing at more than 15 volume, heated seat is on, and defogger, either my radio cuts out or the gauge cluster shut off. and then my ABS light, Brake light, and Airbag light comes on until I turn the car off and on again. then the problem is fixed. So I don't really know whats going on other than maybe my drive belt is getting loose, but i just checked it today and the belt seemed tight, there was about i'd say like a couple millimeters of play when i put some pressure on it. and forgot to mention that the car starts up like its new.

 

This isn't "internal" to the engine, so I'm going to move it to General Tech. You'll get more people looking at it over there.
BTW, WELCOME to the forum.

Does your battery lamp come on at all? One thing you might try if you have a voltmeter, is monitor the voltage (say at the power socket) to see if it gets low when this stuff is happening.