I would like to wire two lights to a switch with power coming into light A then to B then to the switch Cannot get the switch to work What am I doing wrong Can you help

Aaaaaaaaaa

Well, I'll prime the pump a little while we wait on an electrician (which I am not) to give the best answer. Bear in mind that you must run the black from power all the way to the switch first. The only way I know to do that and still be able to make the connections you need is to have a 3 conductor (14/3 or 12/3) cable between lights A and B. This is not a great drawing, but when you look at it carefully, you can see why.

https://www.askmehelpdesk.com/attach...tmap-image.jpg

Sorry, HK. Didn't notice your answer before posting, though I'm happy to know I did get it right.