While buying some items from the listings of what was obviously a Chinese seller's UK warehouse, I came across this listing for a complete wiring loom/harness for a quad ATV (All Terrain Vehicle). It seems that these are a common item on eBay at what appears to be a ridiculously low price.
I guess that maybe if you have an issue you can fire this fully loaded parts cannon at it to resolve most issues.

I bought a loom purely to explore, and had lots of fun reverse engineering the way the components were connected and how they operate. It contains:

The stator of a magneto with three windings. Low voltage, high voltage and sensor.
A CDI (Capacitive Discharge Ignition) system.
An ignition coil.
A spark plug.
A key switch.
A rectifier/regulator.
Battery terminals.
Starter relay.
handlebar control unit.
A cable loom with matching connectors and some spare.
No instructions whatsoever.

Here are my findings. Feel free to correct me if I got anything wrong.

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