I carefully cut all the knackered wire from each connector, then soldered in new wire. Here are two injector pins with new wire:
And back together:
What better place to repair the loom than on a Mercedes v12 coffee table in my front room. Luckily, I have a very cool/understanding wife!
A couple of the connectors required some head scratching on how to get them appart. This 4-pin connector at the front on the engine was one of the more interesting ones!
Carefully cut around with the Dremmel:
New Wires soldered and in place:
And melted back together with the soldering iron:
Yeah, I know, not the neatest job, but it is strong, water tight and you really don't notice it back on the car.
OK, the MAF sensor... With thanks to one of v12Uberalles excellent "how-to's", I knew how to get this connector appart - unfortunately, I'm an impatient kind of chap, so cut it open with the dremmel!
It actually cleaned up nicely when put back together - honest!