extractor

Hi. I've bought an oil extractor to change my engine oil in between the service intervals but have stumbled upon a problem. I've watched multiple videos with people doing this in Audi's and VW's and it's no problem, they stick a pretty thick tube down in the dip stick hole and it just works...

I am fitting a new Blaupunkt headunit to my MK4 Ibiza, this unit allows me to directly connect to the cars standard ISO connector with no need for a adapter or harness. I need to swap the ignition live and the permanent live around. The problem is getting the wires out of the iso connector...