new resistor: $5 at wholesale mopar...look at the illustration...it should be located under the dash in the passengers foot area...a couple screws and it pops off....easy peasy... you could also check on Autozone.com, they may have instructions for your specific model http://www.trademotion.com/partlocator/index.cfm?action=getJointLocator&siteid=213674&Sectionids=0,51825&groupid=51834&subgroupid=2383&componentid=&make=17&model=Grand%20Cherokee&year=2005&graphicID=WA05135&callout=3&catalogid=2&displayCatalogid=0
