Update.
Played around today and now in sw test mode on solonoieds with the under playfeild switch held in the same arrow light comes on plus when I press each flipper button I get the lower playfeild flippers to work ( there is a sequence of all solonoieds in test mode so I hade to wait to test either side).
Also I run up over 20 elektra points and then let the ball finish so I could see if it went to elektra mode (lower playfeild) still no action. But when I held in the test button ( under the playfeild ) I could use the bottom flippers (top flippers stopped working).
So I'm thinking the relay is not getting a signal to switch over in elektra mode. I will study the drawings tonight.
Still not sure why the arrow lights up and nothing else does.