Motorcycle turn signals

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Installing resistors when changing indicators depends on 2 parameters:

- the power of the original blinkerorigine

- The power of the adaptable flasher to be fitted.

The power difference will be compensated for by the resistor, so that the new flasher works optimally.

Example: let's take a turn signal with a bulb fromorigine developing 21W and a sequential LED LIGHTER turn signal ref. IN1126.

The power difference is 21W - 2.4W = 18.6W per flasher.

With the engine running, the alternator delivers a voltage of around 13.5V.

Here we're looking for the resistance to compensate for the 18.6W power.

The Ohm's Law formula is: R (resistance) = V (voltage)²/P (power).

This gives us R=V²/P=13.5²/18.6=9.80 Ω

All you need to do is fit a 10 Ω resistor (ref. IN820) on each flasher to ensure correct operation.