Use crimp-on pins, ideally trifurcon, when re-pinning connectors

Insulation-displacement (IDC) connectors are quick in the factory but cause many faults later. When replacing burnt connectors, use crimp-on .156 in pins; the trifurcon style (three wipers, more heat resistant) grips the header best. Buy pins loose rather than on strips or reels, and choose tin plating, not gold.

Systems

• Williams System 11
• Williams System 11A
• Williams System 11B
• Williams System 11C

Related tips

• Molex crimp pin part numbers
• Burnt +5 V output connector on the 80B power supply
• Connector stock for burnt-connector repairs
• Replace the 3J6 logic power connector
• Replace CPU board power connector 1J2
• Burnt GI connectors on the power supply (System 7, Hot Tip, Lucky Seven)
• Ground mod step 2: repin the power supply to CPU power cable
• System 11 CPU board connectors

Source: Repairing Williams System 11 Pinball 1986 to 1990, Deel 1, Clay Harrell (pinrepair.com)