When you buy a PMD Pump mounted driver be sure to install it right away and use it, I bought a  NEW PMD in SEPT 05 from the seller in CANADA FOR A $150.00. He also sells used PMDS. I bought it as a spare and put it in my glove box I thought it's NEW no need to check it, Now it's AUG 06 I had my PMD fail out on the road so I took my NEW PMD THAT I BOUGHT AS NEW FROM THE SELLER IN CANADA out of the glove box INSTALLED IT, 20 MINUTES LATER IT FAILED. I bought a new one from the dealer at the tune of $300.00, I emailed the SELLER HE REPLYED ASKING THE EBAY NUMBER, I REPLYED WITH THE INFO SEVERAL TIMES WITH NO REPLY FROM THE SELLER  (joeyeraif) I feel I got ripped off. And I feel he knows it. Unforunatly he has choosen not to reply and I can't take back my feedback so I am warning any buyers to take great care when dealing with the seller. You could get a good one or a bad one I got a bad one.