The little green people parts stores have those also so should NAPA sand the end it may start working if you remove antifreeze build up .Yours just works on a light with 2 wires or 1 ?
I have it wired to illuminate when starter engages to check if it works, so I guess two wires.
It lit today when I started the coach and I took it out for a test run with my new shocks. Driving down the interstate at 75mph I looked in the mirror and saw smoke
. Quickly pulled over, ran to the back, water everywhere, opened the hatch and killed it from the master. I had a hose clamp break and water was spewing out. I got no warning from the dash that I had low water. Fortunately I was still running 180 degrees when I stopped.
Putting on a new clamp with hot water dribbling out lying under the bus on the shoulder if IH37 was a real challenge
I drove 5 miles back home with low coolant and the temp gauge was swinging between 180 and 195. The connection was still dripping. I had to drain the radiator to get the water stopped and clamp re-positioned. I took a bath in antifreeze trying to put the thing back on.
I'll pull it tomorrow and check. It shows to be working now, but I can't afford a failure in this device.