Hello,

I have a 12v fan that is used to cool nascar brakes.

http://tinyurl.com/cbl37m

It's a Detmar fan that is about 180CFM, 12v 3.5amp motor. I tried to use a small 12v/400ma transformer but the fan burned it out in about 10 minutes. For the 10 minutes it ran it worked great.

So, I purchased a 12v/4a transformer off eBay. When I hook the fan to it all the fan does it pulse on for about a 1/2 sec. every couple of seconds. I test the transformer and it's putting out 12v.

Any ideas on how to hook up this fan without the need of a car battery? These are nice fans and there's a steady supply of them.

Thanks, YGB