Originally Posted by sanjoh
HID lights use AC downstream of the booster box. In some units it can be as high as 35,000 volts. The voltage can leak from connectors and/or through deterioration of the wiring insulation.
After troubleshooting an HID setup I had a few years back, I took them off the bike. Unfortunately the noise took out the OEM clock and fuel level sensor.
Some folks have had no issues, I have seen several LED lights that have been cooked by aftermarket HIDs, which is why our warranty does not cover installs with HID lights.
Shouldn't a large zener diode (plus resister) in line with the LED voltage solve this?