In the UK here, got an E61 535d with 676 Hifi sound - I can confirm there is an amplifier in the back, and tweeters.
1. Please let me know how much a harness sent to the UK will be - am I right in thinking this harness is perfect for the 676 Hifi setup?
2. I'm thinking about gradually upgrading, starting with an AMP first - will the OEM speakers and tweeters be ok with a 60W amp (it's a kenwood KAC-7404 - not great I know but it's hanging about) or will the amp be too powerful?
3. The amp has two sets of inputs and outputs - A L+R, and B L+R. If I wanted to drive the subwoofers, how could I do this? (Presumably the outputs would only do the Fronts and rears?)