Present me is very thankful that past me connected all the commons in our newer irrigation box. So I didn’t have to undo the common “water proof” wire nut but only connect up the green wire to move from an older, now broken valve in an older box.

A irrigation valve box with wires tied together by wire nuts including the green wire. The small box sits atop some gravel and has a stainless steel braided hose providing input water. There are 20-25 GPH pressure regulators and adapters to drip irrigation hoses.