Get this. The rear right speaker on the maxima has very very low sound.(like i can hear it with a stethoscope) So i figured no problem the amp is probaly cooked ill get a replacement from the junkyard or rebuild it. I get two (2) used speakers from a 97 GLE that worked perfectly..(i heard them before I installed them and the previous owner had each amplifier rebuilt)

I plug it in and it works fine ...Ok satisfied I turn the car off a minute later. I check it again...dead no sound....I unplug it...plug it in again and it works great for a hot minute....then dead...

the other rebuilt bose speaker does the same thing.....when i plug them into the left side no issues...even with the one that was "supposedly cooked"

I have a aftermarket H/u with adapter and those connections are perfect.

Any clue???
(I also posted this in car audio to increase my chance of a accurate answer)