1157 is the standard for tail/brake light for 12 V unless you go to the LED type.
The '49 has two separate bulbs, one for brake, one for running
49 Chevy 3600 65 Chevy K10 48 International KB-1 Service Truck 55 Willys CJ5 - Chevy 331 powered 26 Model T Roadster Rat Rod 70 Tucker Sno-Cat 442-A 96 Dodge 3500 Cummins dually flatbed x-cab 4x4 06 Jeep Wrangler LJ rock crawler If you can't fix it with a hammer, it's an electrical problem
