See the video.

The "W" and "A" are out of order above the sonar, both in attract mode and during game play. The appropriate lane roll overs light the correct letters, so it doesn't seem to be a wiring issue. Has anyone seen this before? Any clue why this is happening?

Thanks,
Chisel

System 4 MPU and standard OEM driver board. All Williams OEM boards. I've had this game for a year or two, I've always just ignored it. Most people that play it don't even notice but I notice and tonight it finally got to me enough to want to sort it out. Could this be some weird screw up from the factory or some joker assembly person getting a giggle out of doing something like swapping the wires?

I guess swapping the wires on both sockets and switches should do the trick huh?

Ok, so I looked at it a bit more here's what I'm finding:

2J5 and 2J7 plugs are all wired correctly.
Activate the W rollover switch on the far left and the W above it turns on and the W above the sonar turns on.
Activate the A rollover switch on the far left and the A above it turns on and A above the sonar turns on.
Switch test indicates the reverse switches from the switch matrix in the manual. i.e. In switch test and I activate W switch (far left) credit display indicates switch 12. Then I activate A switch (far left) and the credit display indicates switch 11.

SWswitchmatrix (resized).jpg

Correct. They are only out of order when they are being sequenced, either during sonar sweep during game play or attract mode.

Ok, I quit being lazy (even before your last suggestion, lol) and I got out the schematics and switch and lamp matrix charts. W is red/brown on both bulbs (inlanes and sonar) and A is red/black for both. Both sets of bulbs (sonar and roll overs) were reversed. The letters above the sonar were very obvious once I stood the playfield upright. The wires coming out of the harness actually skipped the W and went to A, then the second set coming out of the harness went backwards to W... how? Who knows.

Next I checked the switches and yes the switches were reversed too. So I've put them all back where they belong and all is well! Who would have figured that all three would be reversed.

Anyway sorry for being lazy and taking so long to look this up myself but seriously, thank you all for the help and nudging me in the right direction! Problem solved! but... how did it get that way? lol