What I know about EMs wouldn't fill a thimble, but I'm guessing the "path" of your malfunctioning light or switch flows through more than just the thermometer advance unit on the schematic. The problem could be misadjusted or dirty relay switches, a broken or loose wire downstream, or Mercury in retrograde (did I mention I hate working on EMs?).

I've been fighting the base runners on my Play Ball for months. Started out rebuilding the man-on-base latch relays, "adjusted" some relay bank switches, made things worse, fixed them, cleaned up the score motor, cleaned & tightened the add hit stepper unit, etc. Still not 100%.

Long story short, good luck.