Quoted from MJW:Works great on this game. Wish old SAM systems had that adjustment. Somebody was selling a kit for awhile that would dim backbox lighting as soon as game started.
There's dimming modules for Stern SAM from Arcade Upkeep - i'm using them in 4 SAM games, and 1 WhiteStar.
Seriously great bit of kit if you don't mind building your own backbox light panel.