These are the instructions for the ballast resistors that I have used successfully:
"The dummy load resistor is designed to be used on vehicles that have electronic components that are not LED compatible. The use of an optional load resistor simulates the current draw used by a standard direction indicator bulb and enables the flasher unit to operate correctly.
For use when sporadic warning messages appear in your vehicle due to LED’s replacing incandescent globes for 12 volt use
Fitting Instructions
Join or splice one end of the resistor wire to the earth wire of the lamp
Join or Splice the other end of the resistor wire to the power or active wire of the lamp which is causing warning messages in your vehicle."
