Did another couple of hundred miles in the DTi today, and decided to go and buy a soldering iron from Maplins on my way home and attempt the dash fix. First attempt killed everything

, second attempt and it all works as it should, except for the fuel gauge. I am guessing the fault with that lies elsewhere, just gotta work out where.
Rocker gasket has also obviously been leaking for a while and the gearbox and rear of the engine was nice and lubricated with engine oil. So a quick application of gunk and a damn good pressure washing and its looking clean again. Just need to grab a rocker gasket at the weekend.