Molex Connector Mini-fit 6 pin 0039012060

The Molex Connector Mini-fit 6 pin 0039012060 is a straight, keyed, wire-to-wire connector with 6 pins and a 4.2mm pitch. It features positive locking and is made of natural-colored nylon 66 with a UL94V-2 flammability rating. This low-voltage connector is suitable for automotive, industrial, and consumer electronics applications. It is compatible with Molex Mini-fit Jr. 5556 and Mini-fit Plus 45750 series socket contacts.

When selecting a replacement connector of this kind, verify the pin count, pitch, and keying to ensure proper mating. The terminal type (crimp or IDC) and conductor cross-section must match the original harness. Also check the insulation temperature class and locking mechanism compatibility. Measure the pitch and compare the housing shape to prevent misconnection.

Poor contact in connectors of this kind can cause intermittent burner lockout, false flame signals, or erratic modulation. Check for corrosion, loose terminals, or damaged locking tabs. Damaged locking mechanisms may lead to disconnection, while corrosion increases resistance and causes voltage drops.