what you'll need.
System 11 or wpc slingshot assembly
2 slingshot leaf switches
the playfield is already cut to fit the hardware, fit the 2 switches through the holes and wire both together take a look at a lower slingshot as this is going to be all the same...
fit the arm through the slot and attach to the playfield underside.next fit the bracket with the coil, slip the plunger into the coil and determine where to affix the mech by rotating it until you can sit it on the underside.
so everything's in position, we need power to the coil. Solder a wire (thick, same gauge as a coil wire) to the coil lug. there's no diode so look at an existing coil to see which side it fits (yes, it does matter!).run the other end to one of the bumper coils and solder it to the same side lug.
next we need to add in the switches so that it fires when the rubber is hit. wire a wire to each lug of the nearest leaf switch you've added and run these up to the backbox.
remove the power driver board and flip it over. wire one wire to the centre leg of Q14 and the other to the right hand leg.
Next, add a wire to 1J12 pin 8 and run this back under the playfield to the remaining lug on the coil.
That's it, you're done!
NOW READ THIS!!!!!
This is not cpu controlled, if the switches stick closed you will burn out the coil! Add an inline fuse probably, I never did and have not had a problem, it's been used loads.
This mod doesn't add points, it increases the action by the bumpers so you inderectly do score more.
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