After pouring another scotch and considering the possible causes of this catastrophe (it was just after midnight and I am certain that my neighbours wanted to hear it running at least once more that night) I decided that a more detailed test of the switch was in order. I attached a multi-meter and did a resistance check, to find that the third set of wires actually had a resistance of 95 Ohms. This prompted me to disassemble the switch, at which point I found the source of irritation. Suzuki has seen fit to place a resistor in the ignition switch as a theft prevention measure. I removed the resistor from the switch assembly, soldered it into the loop in series, and wouldn't you know it, it started first kick.
So if you are intending to replace your factory ignition switch it might pay to test the switch for resistance characteristics before you grab the wirecutters, it would have saved me an hour and at least minimised the headache I had the following day.
Cheers
Taz
![Twisted Evil :twisted:](./images/smilies/icon_twisted.gif)