Not sure if these help, but some shots from my last shop job of that area that show a lot of the routing. The yellow wires definitely go to the pop bumpers, but my angle doesn't reveal all the details.

underneaath_72_(resized).jpg

underneath__68_(resized).jpg

underneath_71_(resized).jpg

Cool, I figured you might see enough from those to piece it together. Good luck with the rest, especially that 3-target bank

Thanks for posting, looks great!

I have a technical question for the group. My BK2K kickback (on the left hand outlane) misses the ball now and then, it rolls right by when it's lit. However, it works 9 out of 10 times so everything mechanically works, and it's a microswitch and not an opto. Interestingly it doesn't seem to matter if it is fast or slow, and the switch works normally in test mode. But once in a while during gameplay it doesn't register/try to fire which can be frustrating. I've been told before that's just the way it is on this title, but can anyone else confirm that? If not, any ideas on what to check?

Thanks!

Awesome, thanks guys will give that a try. Since it works fine in test mode I didn't think that was it. I'll report back when I'm done and see.

I just wanted to follow up my original post to let others know that it was a flaky switch in case they have the same problem in the future. I assumed the switch was fine since it worked 100% in test mode, but I took a few minutes to swap it out with a new one and it hasn't missed since. Thanks for the advice!

Attached is a pic of the drawbridge area. It looks like you have the upper matching. That mystery plastic goes underneath and covers those plastic posts. Hopefully you can see it as it was hard to photograph that area.

Drawbridge.jpg

Plastic.jpg

Nice! Is this a one-off, or does that mean BK2K is going to get the same kind of attention your Getaway has with all those mods and sound packages?

You need to remove the screw in the center of the backboard (by the t-shirt decal if you have it), then just lift up on it *slowly* from the back. There is a metal prop rod underneath to hold it up. Be careful of the right wire form as it has that springy end for a reason, and watch the large plastic on the left as I snapped it in half opening it up before. Hope that makes sense...

Here, found a photo showing it:

EA9072DD-C0D2-422A-B05C-16A69B661F95 (resized).jpeg

I had the same problem on a different game and it was the transistor driving them had blown. Check and see if both lights are fed by the same one as that might be the culprit.

You can find how to test them here: https://pinwiki.com/wiki/index.php/Williams_System_9_-_11#Controlled_Lamp_Issues