Being only marginally adept at electrical stuff, I need thoughts on how to test my restored/refurbished fans while they are off the car. Is it just as simple as putting 12 volts to the posts at the back? Is polarity important (the right connection on each motor housing has an "E" embossed on the back plate.

Also, in this foto, note the place where there is a "tab" connecting the top two posts that anchor the motors to the housing. They have become brittle and are now broken. They seem to be gasket material (non-conductive)and are they needed?

Thanks.

Submitted by mfrank@westnet.com on Wed, 05/14/2014 - 12:56

You're doing nice work there! As William says, E is always ground. But with these particular motors, it really doesn't matter, as they are series wound. That means they are indifferent to polarity.

Submitted by Bfastr@cox.net on Mon, 04/14/2014 - 11:00

yes Tony,
You can simply connect them to a battery to test, be aware they draw about 6 amps, so if you use something like speaker wire dont run them long. Off hand i cant remember which side is positive, fans arent too complicated, if you get it wrong it just runs backwards, but it wont burn up on you

The plastic thing was a rain shield that extends over the contacts, not required unless you are making a 100 point car or plan to drive in wet conditions.

Hope that helps

Bob f