Coolant level indicator part number 7642553

[mrboj]

Does anyone have this or know where I could find one? Not having much luck with my searches. Below is a photo:

[andyzeetec]

I'm afraid they are as rare as rocking horse poo.

Good luck though.

[Pete126]

Have you put a meter across the terminals or has the float fallen off? I found this on eBay but it's allot of money to find out, it has what looks like the same type of fitting but the part number is Lancia
https://www.ebay.co.uk/itm/Radiator-sensor-water-Level-for-Lancia-type-tempering-Delta-82473880-/132778789997?_trksid=p2349624.m46890.l49292

Or you maybe able to adapt something like this
https://www.ebay.co.uk/itm/Float-Sensor-Switch-Side-Mount-Liquid-Water-Level-Sensor-Controller-Pump-/164630666054?_trksid=p2349624.m46890.l49292

[mrboj]

Thanks for the info. I have taken my apart and it seems like a broken reed switch may be the culprit. Just bought a batch of 5 on ebay for £3 and will report back.

[mrboj]

Success! I think I fixed it. I setup a new reed switch in the normally closed position, soldered it in and appears to be OK now. I put some pictures here:

https://imgur.com/a/zf0HuZx

First picture shows the original reed switch was broken. Later one shows a new one soldered in.

Here is a video showing the circuit opens/closes fine (opening the circuit and turning off the coolant indicator light) when the float rises.

https://www.youtube.com/watch?v=xmy4HKJXcg0&feature=youtu.be