Tried a new sensor it didn't work tried a new gauge it didn't work. Then they tried a diff sensor and it worked. So the first sensor they tried wasn't good.. You might look and see if your aqua hot sensor needs 3 wires or 1 wire.. The new gauges have 1 wire.. So if you upgrade they just use 1 of the three.. Took about 45 mins to fix and they had an old sensor so parts were free
