912 Oil Drain plug size

[Bryan]

I am needing to order a new Oil Temp sender for my 912. Mine is one of the early Kitfox's and this sender was installed in the crankcase drain plug hole. I am having a little trouble finding this sensor. If any of you know what size thread this plug is then I believe I will be able to find the correct sensor. Mine has 399S9 printed on it but when I went to order this it says it is for Cont. & Lycoming engines. Thanks

Update: I must have had a brain fart. This sender is what was called for in the manual and later was switched to the location by the pump. I just unhooked the wires up by the gauge and installed the other sender and hooked it up, so the wires pulling out of this bottom sender are not going to be a problem. However this time I cut the wires off down by the sender so as not to alarm me the next time I forget what I did. It sucks to get old.