Water level sensor Options

[GT4WRC]

After some thought, I decided that the easiest option was to utilise the washer bottle unit for the supply for the improved water spray unit I'm working on.
I'm not sure if it is Group A specific, but at the very bottom of the reservoir is a separate unit which feeds the cold start water injector. It's capacity is pretty small, so I decided to open it up to the main unit and install a level sensor at the same time.

Here is the level sensor taken from a water spray bottle used on a Subaru STi...



I started by making a circular hole at the very bottom of the reservoir to suit the sender unit and then cut a square hole (easier to make) between the two sections...



Once done, the unit was flushed out thoroughly to remove any plastic swarf. Don't want to jam a pump or block a spray nozzle! The seperate reservoir is clearly evident in the pic below.
The sealing grommet was then put in place..



... followed by the sensor itself...



A view from the top...



Plan is to utilize the OE cold start water pump which will be triggered via a relay by the Cusco water spray controller. This in turn will be boost pressure activated. I'll write more when I get to that stage.
Gary