Having had a look at the Quarter Harness Installation and the associated documentation, I found it a little difficult to understand the pin-outs from the various plugs, so I took the liberty of re-writing the Pin-out document provided by Mellow of ST-Owners.com to be a little more understandable. It is attached, but still does not contain pin-numbers for individual pins, so the wire colour code is used as the identifying parameter.
Also be aware of the fact that some wire colours change as you go from the bike side of the Quartet Harness to the actual harness itself. There are, on the bike side, two wires with the same colour code (red with a black stripe) but each has a different source, one is un-switched +12v and the other is +12v from the 'Accessories' position of the ignition switch...so be wary of this.