Succesful couple of days. Finished off sorting the towing electrics, started almost two years ago. Put the ipod interface wiring into the glovebox instead of the boot.
More importantly, changed the intercooler O rings, upgraded the fan resistor, and added a charging point to the front bumper. Was planning to fit the jets and pipes for headlamp wash, but a lack of marked position and not knowing which jet was left and right caused this to be abandoned. The O rings were not as bad as all that. No sign of leakage. The inner one had swollen, but was still in place. The outer looked perfectly OK, but worth doing it anyway.