Your other questions have been adequately answered, but the #100816 cooling fan switch should not cost anywhere near $43 (I hope that was a typo, Joe). I have them for $19.95, and the #102125 thermotime switch for the same price. And there are interchanges for the fan switch, such as NAPA #FS231. -- Darryl Tinnerstet Specialty Automotive 4 LaBelle Lane McCleary, WA 98557 PH: 360-495-4640 FAX: 360-495-4680