Just on the off chance that someone else has had the same problem.

I have just fitted a new stereo to the old lady. It is one of these Bluetooth things. Great all working great BUT !

I have fitted the new wiring and was left with a pink block that fitted the old stereo but hand no spot to go on the new one. Then I noticed that the speakers in the door sub woofer were not playing. Is the wires in the block for the sub woofer as they appear to be and if so how do I wire them into my new stereo. It does have some out plugs for the sub woofer but I have just pluged it in and not working.

i believe they be iso connectors, one black and one brown they should plug straight into your new head unit.

as for the sub then that would have had its own wiring to the old head unit, only thing i can suggest is to try halfrauds, they might just have the correct connector to go between you new head unit and existing wiring loom.....

sorry i cant be of more help......

Your new head unit will have to supply two 12v feeds/supplies (permanent and switch) to the rear amplifer, the wiring from the amp can be found in the ISO block.
You will also have to supply the audio output to the amp, that is the red and black wires that can be found in two wire connector block which will have to be modified to enable them to connect to your new units pre-amplified output (phono).

If you search the forum more info can be found.

Two options to getting the sub in the back door working

1. Buy one of THESE adapters (expensive for what it is!)

2. Chop off the pink plug and connect the wires to an RCA plug (cost about £1 pair from Maplin)

A search on here would have given you THIS thread with everything you need to know