I agree with what brewmaster said
but under the category of do as i say, and not as i do....:bolt
Mine are under the chin on my R1150RT as i didn't want to be paying for more than one set.
I want to carry a spare bulb
The X1100's that came with my bike are great, no complaints. I have a modulator on the headlight already that coupled with the ....gracer green color (EEK !) gets me noticed fairly well I believe. I am adding additional rear lighting, and am going to probably keep the PIAA's on full time during the day.
I want to keep a replacement bulb for the PIAA. Is factory replacement the only best replacement or are there "just as good" replacements at a good price. I'm not interested in cheapest price out there. I am trying to carry good quality bulbs on the bike that will give good candlepower and longest life for the price