Please note: if you are installing this knocker in a pre-WPC machine you will need to add a diode to the coil.
Machines produced up to and including Jokerz (December 1988) use coil AE-26-1200. Machines produced after Jokerz use coil AE-23-800. Choose coil from the drop-down menu.
Bally machines produced before 1987 do not use this assembly.