interesting. the "relay" is internal to the ecu on the brutale. i wonder if it's a full solid-state design?
the normal external relays w/flashers use a thermal switch. when the light is tured on, the current goes through a small wire which heats a metal strip. the heat caused the metal to bend and open the switch. the rate of flash is determined by the amount of current put through the little wire. a lot of current causes the circuit to flash slowly, a little current give a faster flash rate. (
http://auto.howstuffworks.com/turn-signal2.htm)
that's why you see a different flash rate when a bulb blows out or you swap them with LEDs.
looks like in this case, the flasher device is inside the ECU, so you need to adjust the current draw on the LEDs to match the old bulbs, by placing a resistor in parallel. the 10W resistor is needed because is needs to dissipate some power.
the really bummer part is that you're going from an inefficient bulb to a very efficient LED, but now you need to stick a resistor in there so you lose everything you gained!
is there a brutale wiring diagram on the net somewhere? i'd like to take a look at it.
alex