Switch matrix wire colors (all WPC games)

Columns 1 to 8 are green with a stripe of brown, red, orange, yellow, black, blue, violet, gray, and leave the CPU board on J206 pins 1 to 8. Rows 1 to 8 are white with brown, red, orange, yellow, green, blue, violet, gray, on J208 pins 1 to 8. Switch number is column then row, so switch 23 is column 2, row 3. Fixed positions: 11 right flipper, 12 left flipper, 13 start button, 14 plumb tilt, 21 slam tilt, 22 coin door closed, 23 ticket dispenser, 24 always closed.

Systems

• WPC Alpha-Numeric
• WPC Dot Matrix
• WPC Fliptronics
• WPC DCS
• WPC-Security (WPC-S)
• WPC-95

Related tips

• WPC switch matrix basics
• How the switch matrix reads a switch
• Lamp matrix wire colors (all WPC games)
• How the Williams switch matrix is scanned
• WPC flags a bad switch at power-on
• Use the switch matrix table in the manual
• WPC direct (grounded) switches
• Switch matrix chips on the CPU board

Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part One, Clay Harrell (pinrepair.com)