Looks like the engine won't start because the ECU is unhappy that this sensor line is shorted to ground. The loom appears to have rubbed though. A bit of heat shrink and some solder and it's all good.

Mail flows again from my LAN. I managed to totally destroy the config on the exim smarthost... Puppet giveth, puppet can taketh away lol. It was in the wrong host group. #puppetize :D