Nissan Repair: 93 altima - electrical problems, internal fuse, fuse block

Question
I have been battling electrical problems for a couple of years. Mechanics replaced alternators and batteries. About 6 months later I discovered the blown fuse for the alternator sense and replaced. Ran for a few months then the battery went again. I assumed the wear and tear of running 6 months with no regulation wore out the new battery. After installing the 2nd new battery, the battery and brake lights are on. I've checked voltages while running, about 14.8 at the alternator and 14.65 at the battery. Is this the proper voltage regulation? I am suspicious of poor contacts in the fuse box and thinking about running a direct connect from the battery to the alternator sense, is this OK?
Another strange symptom is sometimes the radio goes off when the brake pedal is pressed and comes back when the pedal is released. This doesn't happen often but has happened more then once. Sound like a short? Any ideas on how to diagnose?

Answer
John,

The alternator is supposed to put out no more than 14.2 volts.  Anything over that will cook electrical components.  First thing is to replace the alternator and get the voltage under control.  I am surprised that the fuses have not blown at the positive terminal.  I would be suspecting that the over voltage is causing the brake pedal to backfeed through the master switch on the column and backfeed through the radio cutting it off.  There is an internal fuse on the radio in addition to the one on the fuse block.  So, for starters get the alternator/regulator replaced soon and then email me back and let me know how it works.