Not sure why car manufacturers held onto bulbs for so long. LEDs are the dream solution to the high vibration hard to get to locations that these car bulbs are normally found. Our friend Pete Mills had one of his map lights go bad, the fix for him cost a few dollars and the parts were easily harvested out of a cheap LED light. Benefits of this cheap fix is it will never need to be touched for the life of the car, the light will be more pleasing and draw next to nothing for current.
“You can also see the PCB traces I cut to allow the parallel/series modification. The +/- 12v (nominal) power leads on the LED board are soldered to the wires that used to deliver battery voltage to the incandescent bulb. The connector for the original lamp was left in place electrically and solder joints were insulated against short circuits.”
