Well, let me buy that temp gizmo (can you measure temp of a Thanksgiving turkey? this could be selling point for my wife...) right after I put the remote tire pressure gizmo from Tirerack (and a laser cannon from Q..., oh, drat, he's dead!).
But seriously, my gauge was jumpy and I thought it was electric until a dealer told me it's most likely steam buildup behid temp sensor (it was).
1985 190D 2.2l Sold-to Brother-in-law
1996 Mustang 3.8l -"thinks it's a sports car"
1988 Grand Wagoneer - Sold (good home)
1995 Grand Cherokee Ltd -"What was I thinking??!!"