Dan@bar 0 Posted February 28, 2009 Hi all, I've just bought a replacement blower resister from ebay which looked like a 5pin in the photo but has turned out to be a 4pin now that it's arrived (my fault I didn't check with the seller first!). What's the difference between the 4pin and 5pin and will it work ok in place of my old 5pin item? Cheers Share this post Link to post Share on other sites
Super Josh 4 Posted February 28, 2009 The 5 pin has a relay that cuts in at full power to bypass the power transistor and its' inherent voltage drop. So you get a slightly higher fan speed. Both types are interchangeable. HTH Josh Share this post Link to post Share on other sites
