Description
The Weil McLain 591-391-978 Control To Module Wiring Harness connects primary controllers to ignition modules in CGI boilers requiring factory-specified electrical interconnections. This pre-assembled cable assembly features molded connectors, color-coded conductors, and precise pin configurations that ensure correct signal routing between microprocessor boards and spark generation circuits placed at HVAC systems. Factory-terminated connections eliminate field splicing errors while maintaining proper wire gauge specifications for low-voltage communication signals and ignition transformer power delivery. Its secure construction protects electronic communications from electromagnetic interference generated by transformers, motors, or switching units.
