I've two !
I saw the schematics and ordered the plug, then waiting for it I saw that Motobins had a very attractive sale on the original BMW tool on their Ebay's account. I was mad to buy one...
The Motobins showed first.
As I had all the parts to copy it, I made a second one. Just missing the plug (I save it for... who knows ...) You can go without the plug provided you use small test pins and RESPECT the correct wiring...
LED is lit without anything into the sensor's gap.
As per the male connector, I was told by two vendors that it is not produced any more, as makers of sensors for the automotive industry make it on their factory. This way, they have a complete equipment. (like the mains plug on any appliance, they are moulded directly on the wire.) and this is strange as you may need some for the testing devices and/or maintenance equipment...