Review on Parts Express Socket Unlock Circuits by Lawrence Feldman

A great way to install two relays if that's all you need. If you need more than two, there are other modular options. Why all relay sockets come with short wires that need to be spliced I will never know, I buy the plugs that come with the socket in bulk and run the wire from the relay to the device without splicing, I wish they would simply supply a plastic holder plus then connectors 14-18g for the start leads and 10-12g for the source and load leads.