In cab blowers

So, stupid question, but will this be ok for what I need? If it is, how do I test to see if the fans work or are broke with it? Never used one before but I want to understand how as I'd ideally like to keep my A2 going as it does a good job and is so close to the 200k miles mark.
 

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Hi, yes, that's just the job.
If you think in terms of a water system, voltage is pressure, and current is flow rate.
Your car's electrical system works at a "pressure"/voltage of 12 volts, and things like interior lights work at low "flow"/current, (0.5 amp), while a head light bulb works at high "flow"/current, (5 amps each).
So, first step is to look for 12 volts at the blower. I'll look out some information that'll show you where to put the multimeter leads.
The last term you'll hear is Power, expressed as Watts (after James Watt, steam power pioneer). Power is the amount of (think size of a header tank), that you'd need to give the pressure and flow you want. In electrical terms, power in Watts is V (voltage) times A (amps).
So, our 55 Watt head lamp bulb draws 4.6 Amps, (55W/12V).
Hope this helps.
Mac.
 
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