I have a Monster Bash that was manufactured after both CV and NGG. It has a wiring harness for a real replay knocker. I added one and turned off the electronic sound and I really like it. I would like to do the same for a NGG which was made before MB. Is there a way to do this? Thanks for any ideas.
Almost certainly not possible without a software modification. You can put the hardware (solenoid) in the machine but you still need software to drive the transistor.
Presumably, Williams software expects the knocker to be solenoid #7. This solenoid is used for a different purpose in Cirqus Voltaire and No Good Gofers.
Monster Bash and Cactus Canyon have solenoid #7 unused so the software may activate the knocker. It depends on the software.
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Kansas City, MO