Are you sure it had a Monsoon amp? I don't think they put them in until 97 (there was a Bose option before then so that might be what you have). You said even after removing the amp you still had no sound on one side? Honestly the issues sound like they may be from your head unit. You said the left side of your subs don't work when you connect the remote wire? Is this also connected to the headunit?