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MC4 Solar Connector connection guide


MC4 Solar Connector is the name of the connection type on all new solar panels, providing an IP67 waterproof and dust proof safe electrical connection. MC4 Solar Connector will not connect with older MC3 type Connector.

The MC4 Solar Connector work best with 4mm and 6mm solar cable.

The picture above shows all the parts for the male and female connectors.

All you need is the cable, a male and female MC4 Solar Connector, wire strippers, some wire crimps and about 10 minutes of your time.

Step 1: MC4 Solar Male Connector Fitting


You will notice the wire is stripped shorter than the metal crimp connector. There is a mark on the metal to indicate how far the other connector will enter into this one, if your cable extends past this mark in the connector you will not be able to join the MC4 Solar Connector together.

Recommended cable stripping length is between 10 - 15mm.

Step 2: Crimp the Cable