Gazzini 10036658 Traduction Du Mode D'emploi Original page 28

The required resistance can be determined using the following
formula:
Required resistance R (in ohms) is equal to the square of the
electrical system voltage (6/12 volts) divided by the watt difference
between the old and the new turn signals. The original wattage can
be found either on the original bulb itself, in the vehicle handbook
or possibly on the turn signal lens.
Example:
Turn signal original:
Turn signal accessories:
Watt difference:
Square of the electrical system voltage divided by the watt
difference = required resistor
²
12
= 13.1
19
A 13 Ohm resistor is required. (not included).
The resistors are available partly pre-wired, so they are very easy to
install, and it is impossible to connect them incorrectly.
You must pay attention to the load range for which universal
flashers are intended to be used and whether there are one or
two turn signal indicator lights on the vehicle. If there is only one
common turn signal indicator light for the right-hand and left-hand
flasher, one hazard warning flasher or one acoustic turn signal
monitor, it may be simpler to work with resistors.
28
21 W
10 W
11 W