Clean It Up
UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: combat1 on August 22, 2011, 10:14:58 pm
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got two black wires from the voltage regulator to my booster pump.
I need to know which wire is the positive one, in order to fit a high pressure switch.
Does anyone know how to determine which black wire is the positive one?
I have a voltmeter if thats any use,
Many thanks