I know this doesn't really answer your question but your best bet is to track down a wiring diagram off the web and go from there.
On some mowers you just can't disconnect a safety switch to bypass it. Unlike the seat switch on my Troy Built Pony, unplugging it will bypass the safety switch.
My father's 2000 Snapper would not start one day (or it died on him). I tracked it down to the safety switch on the blade. The plug has four connectors. At first I tried unplugging it. Then tried running a jumper wire across various connectors. I finally had to track down a wiring diagram off the web to figure out which wires needed to be jumpered before it would allow the engine to start.
Yeah, safety switches are there for a reason but sometimes they can be a real anoyance. Like trying to mow on hills. I try to shift my weight to the side of the seat to put more weight on the wheel that is pulling so my mower doesn't spin out. Then it just dies.