Sunday 19 November 2017 at 00:39
SiegCraft electronics sells basically this mod... it's basically a plug and play jumper with resistors to ground for each of the controlled lamps. I ended up buying one but will not be installing it. I cannot stand the instant on and off the LED yields whereas the incandescent bulbs give you a fade ...
Source: http://pinside.com/pinball/forum/topic/led-lights-in-bally-1978-ss-game-new-board-required/page/2#post-4080354