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Hi All, so looking to upgrade my head unit and pulled the old one out today. Quad lock connector only has Block 'D' fitted, Block 'A' is completely missing!!!! I don't have the 32 pin connector plugged into the back of the unit either, not even installed as a loom, as far as I can see! All the speakers work fine and as far I know sounds ok. Is this normal?

Cheers. xxx

Yes that's perfectly normal.

The 32-pin connector is only needed when you have a TV tuner, an Aux In or an AMI.

And Block A is only needed when speakers are connected directly to the head unit, and as all RS4s have Bose (where the speakers are all amplified) it's not needed.

Thank You PetrolDave, you sir are a legend. xx