1. Buy small LED torch from ShumShuiPo, cut the front head by Cut disc, thickness up to you, mine is around 5mm.
2. Connect the SMD by thin wire, covered with plastic tape for insulation.
3. Put this SMD on the small plastic window, and covered with Aluminum foil.
4. Drill two holes in each lamp at the back and insert screws (only stem, head cut) for fixing onto the car body.
5. Connect the SMD in Parellel, and resistor for reducing 0.5V.
6. Connect to 3.7V Li Battery. Done!
Whole process around 2hours, most time spent on cuting the torch..haha
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