Yes. Come and have a look at my looms laid out. Makes it easy. The engine loom connects to the ecu, dash cluster, fuel relay, fuse box. That's pretty much it. The cabin wiring is very messy however with cables going from one to 4 then back to one again in places. An f set was useless as was a multimeter for some as different colours went into connectors and spliced and went back again to original colours. Also they changed quite a lot from the first series. Also wiring is all mixed up, so don't expect to pull out a section at a time like I'd hoped for. Any more info and I'll try my best to relay information.(pun intended
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I've been working on deleting a lot of wires like the auto sensors, audio cabling etc and bundling it up into groups so it makes it easier to troubleshoot. Leaning toward tapping all wires needed for an aftermarket ecu and saving them for a rainy day.