Two white wires and Two black wires...

[joker_212003]

I'm a bit of a pack rat...so my wife says, anyways...I had a hobart handler 125 welder quite a few years ago that needed something replaced on the "motherboard" and it was going to cost about half the price of the welder when I bought brand new. Sooo, being the pack rat I am...I took anything out of it that could be useful in the future. One of those things that I salvaged is this fan pictured here. I would like to put this fan in a rectangular hole that is located in the rear dash leading to my trunk. If u notice it has two white and two black wires. I've spliced both white wires together and both black together, then I used a spare car battery and put the white wires on the positive and the black on the negative and got nothing outta the fan so I reversed it and still nothing. Then I tried putting a on/off switch to it with one white(+) and both black(-) to the battery and the other white to the fused switch and still got nothing. Then without switch...I put both white wires to + on the battery and one black wire to - on the battery and with the other black wire I touched the + on the battery and it sparked a little but the fan moved and every time I sparked it the fan would move. The faster I sparked it the faster the fan would move. Now I'm sure that it is obvious that I am no electrician by any means so for those of you that maybe an electrician...how do I hook this fan up in my car? A diagram would be Great! Thank you for info

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[yogegoy]

Ha ha ha could be an AC fan since it says 115V on the label. Could also be a two speed fan but that's just a guess.

 

[joker_212003]

Yea...it did come out of a welding machine which has what is called a duty ratio. Duty ratio means welder will get too hot and stop the wire feed but the fan will continue to run to cool welder...Once the welder has cooled off you can continue to weld.

 

[Jepalan]

Not sure about the dual wires (probably 2-speeds) but it definitely is an AC fan. It says 115V/ 50/60Hz on the label in the first pic. Also says it needs a little over 1 amp. You would need a DC to AC inverter rated for motor load.

EDIT: Some AC induction motors (like those on air conditioners) have an external capacitor that helps the fan get going from a cold-start. The extra black and white wires could be for the start-up cap.