âOne of the key items not listed above is that aftermarket HID (High Intensity Discharge) lamps will fail. Of course, machines like the BMW K1200GT had them as standard, which is fine, but any standard halogen lamp thatâs been converted to take HIDs wonât get a pass. There can be numerous issues with incorrectly fitted lamps, from the fact that the reflectors wonât focus the beam correctly, to serious electrical problems.â