Mike:<p>I have a very weak rear window defogger. I have sanded the electrical connectiions around the rear window. I have made sure the defogger lines are painted on without breaks. I have replaced the switch. It only lights up for the high mode, not the low mode. The only thing I have not done is replace the defogger relay, under the hood. Where do I get one of these? Is it a 12 volt - 30 amp? Is there still an in stock part number?