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Prudent RVer Info on
Incandescent Bulbs Using the BA15s Base

The BA15s type bulbs come with a grounded 15mm diameter bayonet base, symmetric ears, and a single contact for the positive connection. Typical 12-volt bulb numbers are 67, 93, 1003, 1073, 1139, 1141, 1143, 1156, 1295, and 1383. The following generic information comes from donsbulbs.com

Bulb volts amps watts design life lumens length uses
67 - miniature 13.5 0.59 7.97 5000 hrs 1.44 in side, tag lamp
93 12.8 1.04 13.3   500 hrs 2.0 in side, tag lamp
1003 - miniature 12.8 0.94 12.0   200 hrs 189 1.75 in dome lamp
1073 12.8 1.8 23.0   200 hrs 402 2.0 in flasher lamp - hot
1139 12.8 1.04 13.3   700 hrs 190 est 2.25 in spot lamp
1141 12.8 1.44 18.4   500 hrs 300 est 2.0 in ceiling lamp
1143 12.5 1.98 24.8   400 hrs 400 est 2.25 in spot lamp
1156 12.8 2.1 26.9 1200 hrs 403 2.0 in auto stop lamp
1295 12.5 3.0 37.5   200 hrs 629 2.0 in scare light lamp
1383 13.0 1.5 19.5   300 hrs 300 est 2.63 in spot lamp