Used in the rectangular housing under-dash on both the driver and passenger side.
561 specifications
#561 Miniature Bulb Rigid Loop Base - 12.8 Volt 0.97 Amp 12.416 Watt T-3 12.0 MSCP, C-8 Filament Design, Rigid Loop Base. 1,000 Average Rated Hours, 1.72" (43.7mm) Maximum Overall Length (M.O.L.), 0.37" Maximum Outer Diameter (M.O.D.).