Hi guys, I noticed the other day that the 2004 XTX rear light pulses when the indicators are on. It happens when the running light is on, and also when the brakes are applied (it 'pulses' brighter of course when brakes are applied).

This happens when either left indicator, right indicator, or hazards are on.

The indicators are standard, the rear light bulb is an led one. I get a feeling that there is a short somewhere?

Here is what I have done to see what is going on:

-Remove rear bulb, measure voltage of the 'tabs' in the light socket, sure enough when indicators are on the voltage goes up and down, when indicators are off it is constant.

-Unplug rear light wiring (gear selector side of bike, underneath where pillion handles would be) and measure the voltage coming out of the wiring loom towards the rear light. There were the same fluctuations in voltage when indicators selected, but constant voltage when not selected.

-Unplugged indicators from wiring loom on gear selector side of bike under pillion handles and measured the voltage at the same places as described above, same result. (This leads me to think that indictor bulbs are not to fault, and there is a short somewhere deeper in the system)

-Unplugged rear brake foot pedal switch above airbox on brake pedal side of bike. The rear light still pulses when indicators are on.

-Unplugged indicator relay, this stops the rear light from flashing when the indicators are selected (obviously), and so I believe there is a short somewhere inbetween the relay and the indicator bulbs. When the indicators are selected the wires going into the relay give a constant voltage, when the indicators are not selected there is 0V, as expected.



I have tried to follow the wires around the wiring loom but I can't see where they go.

I am very grateful for any help,

Thanks

Harry


p.s. I just had a thought, it's not a safety sytem that has been included so you are more visible when indicating is it?