Hello, I'm new to the Mazda 6 and new to your forum, and I must say what a great forum and what a brilliant car the 6 is.
I'm from the UK, so I have a UK spec 2006 1.8 TS.

On exploring my car I found a loom and connector block in the spare wheel. I bought myself a Bose subwoofer but it doesn't work. I have the standard stereo with just four speakers, no tweeters. I've read that I might need the amplifier and relay. Would I already have the wiring for the amp ?
Many thanks for any help or advice given, Steve