Some of the left side of your diagram is missing.

Here is the left hand side of the drawing showing the right hand sling shot solenoid. Unfortunately, while I can see the right hand sling solenoid coil I can't find the left sling solenoid coil in the drawing.

Both sling switches are in column D of the switch matrix.

I am going to life my play field and look at the left sling shot wiring. I can't believe the left sling solenoid has been left out of the print but I am not seeing it at all.

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Nine Ball playfield 1:4 (resized).jpg

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EDIT: I see the left sling shot coil way down in the lower right of the diagram.

the brown wire will attach to one of the switches with the orange wires. A Brown/white wire will attach to the other set of switches.

I can get you some pics tomorrow. I have to shuffle a couple of pins and remove the glass.

Since you have brought up Catacomb, during Catacomb multi-ball if a ball lands back in the saucer it stays there, which sort of diminishes the effect of multi-ball.

Would there be any way the code could be changed to force the saucer to kick the ball(s) back out onto the play field during multi-ball?

Just for you, sir.

o-din posted this link on another thread. This is an interview with Steve Kirk, the designer of Nine Ball. This is a rather long .PDF file. These pages in the interview are close to the bottom of the interview.

http://www.backglass.org/stern/steve_kirk_playmeter_4.pdf

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That drop housing is not difficult. You have 8 targets instead of 4. You have 8 active coils instead of none. If you have not yet replaced your metal lamp boards with Christopher Eddy's 555 lamp boards you will need to be careful and replace the assembly with electrician's tape to make sure you do not short it out on the lamp boards.

The nice thing about this drop assembly is that it has a molex connector for all of the switches inside. I cannot remember if solenoid coil is molexed or not.

It is easy. Don't be a wuss.

Hmmm. Catacomb. OK. I will retract my comment

The orange trigger wires on the slings contain one cap each.

The trough micro switches do NOT have any caps.