Review on Dorman 599 5000 HVAC Blower Switch by George Karadimas

I purchased this switch based on a customer review that said it was a perfect match for the Peterbilt heater control switches. It will not fit a 2004 Peterbilt 387 heater blower switch. My switch has 7 poles scattered across the square plastic, this switch has 8 poles grouped together. I gave it 3 stars because I had to give it a rating, it's probably a good enough switch, it just doesn't suit my application. So if you're looking for a fan motor switch for your Peterbilt 387 2000 series, don't buy it. The switch listed has a gray plug in the illustrations shown. If there were photos of the back of the derailleur on this list, I would know I would not buy it. An all black switch is standard.