I recently acquired an 80's vintage Jacuzzi Vectra spa. The hi limit switch was diagnosed as bad, and previous owner removed it. He didn't mark the wires, now I have the task of figuring it out. My searches online have only turned up schematics for the spa that don't have a breakdown of what's in the heater/thermostat/hi limit J-box. Any ideas where I can find a more detailed schematic?