Hi all I’m new to this forum. Had a 9-3 aero for almost 2 years now. Gotta say it’s the best car I’ve ever driven. Just one small recent fault that’s bugging me is. The amp ( located in rear boot compartment on near side ) seems to be draining power from the battery when the car is stood. If I remove the fuse for the amp the drain stops. I was hoping someone else may have experienced something similar and found a reasonably cheap solution thanks in advance, Richard.