Replace IDC connectors on Firepower and later with crimp

Williams switched to IDC connectors with Firepower. They fail with age, so replace them with crimped Trifurcon pins in a new crimp housing; IDC housings cannot take crimp pins. Earlier System 3 to 6 games already use crimp housings, which can be reused with new pins.

Systems

• Williams System 6 / 6A
• Williams System 7

Games

• Firepower

Related tips

• Individual controlled lamps dead with good bulbs: dirty backbox harness connector
• Connector parts to keep for System 3-7 games
• Unplug connectors by the housing
• Replace the 3J6 logic power connector
• Replace the 40-pin interboard female connector
• Removing the old interboard female connector
• Always replace both halves of a connector
• Run Firepower on a System 7 CPU board

Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part One, Clay Harrell (pinrepair.com)