Forgive me if this bean beat to death, but both of my R5K's have a single black wire that comes out of tail harness and just sits there, no connector, just ends. Looks like antenna for my garage opener... not on the diagram. don't feel like cutting the harness open just to satisfy my curiosity, anyone ever traced it?

Also while asking questions, what does oil pump solenoid do? All the bikes I've seen before only have a cable to meter the oil, does it simply override the pump?

Last question is about PJ solenoids, do they have anything to do with cold idle? My bike will idle at least 1000 rpm higher when cold and when warms up idle will come down, don't have another running bike to compare it to.
My theory is that PJ solenoids like EFI on later cars/bikes raise cold idle or
I simply have a bad seal and it sucks air when cold, air leak stops when engine warms and expands

Any way to check PJ solenoids? what to expect if they fail?

Thanks in advance