I had those aux lights on my GS before. They are good, solidly built, and I am considering again for the Tenere. However, I am unsure how much juice it would suck from the puny Tenere battery. Would it affect other gadgets etc. or lengthen the amount of time that the battery needs to be charged? The dealer told me that the bike needs to run for 20 minutes in order to recharge one START. May be a bit extreme, but a couple times after I started the bike, I forgot something so I had to turn it off and turn it back on again. On the second START, it does feel the battery was trying to give me the little it's got.