Bob - you got me - it does have 2 electrical connections, each with 2 spade terminals. I went to take a picture, only to find the batteries are flat in the digital camera. So I'll have to use 1000 words......

One switch thing is on the refrigerant hose nearest the condenser, the other switch is near it but mounted on the drier body. And there is the out hose, and then a bolt...

I undid the bolt a little and coolant started flying out so I closed it sharpish!

Still, no visible flow in the porthole.