Right, time for another update. Today it was such a lovely day I decided to go to the garage and collect the car and do a couple of jobs. First, and crucially, was fitting the new brown speakers:
Very pleased with that, although my high wattage speakers only just about fit in the recess.
I also took the car for a little drive and took some pictures - this is the blistering to the bonnet:
And this is just a nice picture to enjoy! (I really need to get the lights properly adjusted so I can lose the beam benders).
However, there is one new problem with the car - the dashboard lighting occasionally goes crazy, and it looks like I am permanently indicating and have my fog lights on. Also when I do actually indicate, the indicator lights go off! And when I put main beam on, it makes the indicator and fog light glow much more brightly, whilst the main beam light does nothing.
It's happened on a couple of occasions before but it then fixes itself after a few miles of driving. I have checked and the car isn't actually indicating, so it's probably a fault with the instrument cluster.
It was doing it again today, so I decided to swap to a spare instrument cluster. Unfortunately - exactly the same:
I then went for a few miles' drive, and suddenly it all returned to normal again (I was actually indicating when taking these pics to prove the indicator lights now work).
Does anyone have any ideas? It's not a major problem, but I can't imagine that the MOT tester would be very happy if it played up during the test...