Not having a schematic for your machine makes life harder. Looking at other 1966 machines, some have anti cheat REs SWs on the lighting circuit, some don’t.
Watching your video, it is obvious that all lights are turning off, so I’m expecting that your machine does have switches for the general illumination on the anti-cheat relay. Check that the anti-cheat RE is energising and staying energised. Check your schematic is similar to the one below.