Just found this on Youtube and had never seen it before - amazing colour film of Lou on the US "Rock And Roll Heart" tour doing Sister Ray in Passiac NJ 6th November 1976, complete with wall of TV screens. I'd only seen clips of "Kicks" and "Wild Side" from this film but now here is Sister Ray! (But what the hell is going on with that dog barking at the end?).
https://www.youtube.com/watch?v=uejUmMdJG0Q
also a link to a longer (but B+W) version here:
https://www.pastemagazine.com/articles/ ... -ray2.html
I've always conjectured that it was Mick Rock who filmed these shows.