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Sunday 11 February 2018 at 18:34
The easiest way I find out which is which is if the the Ball in Play lights are working, I just pull up on one of the U Jumpers (not the one where the wire goes to the solder lug under one of the spider mount screws). The light would turn on and off as you lift and drop the jumper. Then, the other...
Source: http://pinside.com/pinball/forum/topic/can-you-guys-help-with-a-gottlieb-game-over-issue#post-4224334