OK, so because I am a sad git who likes taking things to bits and never putting them back together, I had another look at the stereo "arrangements" today.
I posted a question in the stupid Q thread - then found a later factory shop manual online. It looks as if -
-That Amp in the back does power the rear speakers and the sub
- I am missing some wiring at the front, which would take the signals to the amp.
I had a delve under the driver's seat where the loom from the amp emerges, but it's not easy to see without removing the seat. I am expecting to find a snipped loom somewhere.
As I was tracing the audio loom back from the rear sub I was starting to think it must have been added by some hacker as it looks a bit amateurish - but then I found some pics online of a bloke with the exact same setup on his. So it's reassuringly factory bodgery (before whoever chopped it got there).
The more I look at the utterly hatstand wiring, the more I like this car.
1994 Range Rover Classic "The Crying Pumpkin"
2000 Ford Mondeo Verona 1.8 pez
2000 Ford Puma 1.7 - Roffled and now with new AS owner
1968 AMC Rebel SST convertible (working and road legal but in limp home mode)
1967 AMC Rebel SST convertible (superior body and originality being slowly raided for spares for the '68) Off road for at least the last 25 years
1956 Chevy 210 4 door hardtop - bought in 2000 and still in my garage - I even do a bit of work on it occasionally - long term project
2005 MG ZT-T awaiting completion of engine transplant of spare V6 after OMG HGF on the engine that "never has that problem"
2005 Land Rover Discovery - for long trips and moving engines