It's a simple relay rewire in the conventional way. I piggy backed off the original pressure switch initially, then switched the relay through the microswitch instead of through the original switch. It was a long time ago, but plenty of wiring diagrams on line.
I think Craig Jezz recently changed his plunger switch. That set up might be easier to fit.
Thanks Dave, hopefully Craig will be along with his way. Easy is key for me 😂
