water temperature gauge
just install speed way (brand) a metric water temperature gauge 40c to 120c with an ntc sensor cable tied to the thermostat housing and covered with dense foam for insulation. I used used the clock accessory 3 wire harness to power it center wire is permanently on and one end is - and other end + witch power by ignition switch, I used two end wires to power it. so time to test it ran the engine till the fan cut in 93-95c then temp dropped to 90c when fan cut off. I may cut hose just after thermostat and fit sensor adapter, just have to find right size