According to the thread at the bottom of this post, the part # is E7RY*13466*J (Bulb-Typ W)($3.29) It seems that you can also replace them with a Sylvania #2721 (from Pep Boys or somewhere similar) for less than $2. Check out http://www.contour.org/archive/showflat.php?Cat=&Board=UBB3&Number=141030
96 Contour SE
Duratec V6 24-valve 2.5L ATX
108,000 mi.
Replaced: crankshaft w/ DMD, EGR valve (clogged), EVR, DPFE, PCV valve, evap emissions hose & tube (cracked), window regulator (broken), LH & RH PCV tubes, UIM gasket (leak), ignition coil
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