Hi Jim thought i would get in early and leave something for you when you get back from holidays, well i managed to get to those lights so simple actually.
And by the Video i learnt that there are 4 lights in all the bulb for the reserve is gone, same with the slot 22 light, but the bulbs for the insert coin and play now bulbs are there, they were working before those 2 lights when i first started looking in to this old machine.
Anyhow by the video i am pointing to these metal tabs on the lights or trying to, i am guessing they were the metal tabs you were talking about testing, i have bought a multimeter so much stuff and dials on it i am confused looking at it, lol
Oh also as by the photo the reserve now button is gone, should show you a clear image of that in the photo (god knows how to fix that). So i am not sure what to do next i guess it is good news to get to those lights, if i have to use that multimeter i may have to post a photo of it as so much dials on there i wouldnt know what i am doing, well anyway here is the video and the photo hope you are having a good break and speak to you when you are back
cheers
https://youtu.be/oiSeUHX-AKA