So I picked up some VW heated wind shield washer nozzles.
These were likely a waste of $22.
I ohm checked them and they were reading 46ohms. Which means they only draw about 1/4 amp at 12 volts.
My guess is you power it up with your defroster, warm the mass of the nozzle assembly and pump cold fluid through it which likely makes them instantly cold again.
So for $50 I found a Delphi HTK400 wind shield washer fluid heater, originally made for commercial application ford super duty trucks.
The instructions say to wire the 2 thick leads to the battery and connect the 3rd wire to an "ignition ON" source.
Since this thing has fairly thick wires on its not going to just draw a few amps.
I am thinking just wire the "ignition on" signal wire to the defroster button circuit. That way it only draws power when I actually need it and deactivates automatically when I turn the vehicle off.
I may add the heated VW jets later.
In new mexico we have had a lot of rain lately, meaning it could be another very snowy icy winter.
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It has 8 gauge wires not 10 gauge like I originally thought.
The internal volume is likely about a half cup. It draws 27 amps while its warming up. It takes maybe a minute to warm up.
This picture shows the wires and the heater heating up.
This picture show the vent mounted nozzles I added (OE pulled from my old blue diesel).
This picture shows the wiper mounted nozzle.
