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Bard part number 3000-1603 is an OEM transducer wire assembly used in select Bard wall mounted HVAC equipment to connect the pressure transducer back into the unit wiring harness for proper pressure signal feedback during operation. If your unit is showing pressure related faults, intermittent shutdowns, or unstable capacity control, a damaged harness, loose connector, or broken conductor at the transducer plug is a common field find, and replacing the harness restores a solid, reliable connection without splicing. This factory wire assembly is built to Bard fit and connector indexing so it routes correctly and plugs in cleanly, helping ensure accurate pressure readings and dependable system control after service.