Spot Gu10 AC Resistor 12 V

How to solder a led chip spot light board with soldering a resistor between the led chip wire to 12v battery, gu10 3x1w chip 3W led chip board AC power connect wire to DC 12v battery, How to measure resistance value I testing the 3w led boards solder led chip with different carbon film resistance values on 12V, 13V to show you what happens to the light brighness soldering tutorial ac dc led light. Test a led chip board test the 3W led light board 12v battery not get very high temperature with 13V and they gi