It's a temp sensor that keeps the A/C clutch from engaging below a certain temperature. It is found mounted on the front of your heater/A/C box (under the hood). Regards, DaveG. ----- Original Message ----- From: "Peter Engel" <peter.engel@xxxxxxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Thursday, July 29, 2004 2:50 PM Subject: IML: Identify this part > I've owned a 70 Imperial for 20 years and never seen this part on my > car. Anyone know what it is? > > The part number doesn't seem to be in the 70/71 MPC > > http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=24856 > 54577 > > Pete in PA > > > >