My monsoon amp is starting to go out I think. Losing sound but have power to radio and cigarette port (no blown fuse). When looking at new amps, I see people stating that the amp part # must match or will not work. I have the part # 15238473. On the wholesalegmpartsonline they Have this one listed with the 15833071 (15833071;15238473). Would it be safe to consider that this is the same part or shall I continue my search for exact match? TIA.