Thanks Greg. I'll buy a multimeter. I need one anyway.
Ian, the "I" relay switches close, and stay closed when I activate the left kicker when a game is started.
The thing that really confuses me is both kickers do work when I turn on the machine, before I activate a game. Then once a game is activated, the right kicker, when triggered activates both kickers (which it should), but the left kicker just closes the "I" bank switches. I have checked the switches under the left kicker to ensure proper contacts, and all is good.
Something must not be right once a game is started, coz both kickers work before that.
Strange.