Lamp matrix wire colors (all WPC games)

Lamp columns 1 to 8 are yellow with brown, red, orange, black, green, blue, violet, gray. Rows 1 to 8 are red with brown, black, orange, yellow, green, blue, violet, gray. Lamp number is column then row, so lamp 47 is column 4, row 7.

Systems

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

Related tips

• How the WPC lamp matrix works
• How the WPC lamp matrix is switched
• WPC lamp matrix and GI driver parts
• Switch matrix wire colors (all WPC games)
• Lamp matrix fuse F114 (F106 on WPC-95) keeps blowing
• The three WPC lamp circuits
• No lamp matrix lamps light
• All matrix lamps stay on

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