First get yourself healthy.
You did correctly jump the connector contacts. I've been known to just use a paper clip. So since it's likely that power is not getting to the temp switch, it appears the next connector is upstream from there at the diode. Yes, it sits under the tank as shown in these pics:
http://www.chinariders.net/showpost....7&postcount=24
Kind of right where fingers go while playing with intake valves. I don't know if it's visible from underneath without raising the tank. Might be able to just lift your rear up.