Never had a single electrical issue with mine, beyond a faulty abs sensor on the rear that really is as easy to fix as unplugging the old one and plugging a new one in. I can honestly say that the electrics seemed really solid on that thing, the routing of the wiring was top notch (nothing to get in the way while working on other things or anything that rubbed or pulled depending on the angle of the bars) and none of it ever misbehaved. [mention]old-timer[/mention] makes a great point that you shouldn't be deterred by the bad experiences one owner had with one specific bike, but there are a couple of common issues to be wary of on the F650GS single that it's worth being wary of before buying one, and most of them can be avoided by steering clear of the first couple of years of production: Surging and stalling (like 1/6th of all 2001 models, mine didn't do this) Fork failure (2001 and 2002 models, but most if not all will probably have had a fork swap with a 2003+ by now, mine had) Water pump seal failure (all models, and real nasty when it does happen) Biggest tip I can give you when looking at an F650GS is check the oil for any signs of contamination! You do not want to inherit a bike that needs the pump seal replaced, much less one that could have been running contaminated oil for an unknown length of time. And if the temp light comes on when you're test riding it, walk away. I don't mean to give the impression that there is a high chance of running into this issue, it's just more common than most and a real headache if you do run into it, so avoid buying one that's already gone awry A more serious consideration, though: Seeing as a bunch of your questions have been about working on the bike yourself, be aware that a lot of the jobs on the bike will require you to buy extra tools! Obviously it's a BMW so you'll need torx bits (and the torque values on some of those torx bolts, I would strongly recommend torx bits for your socket set over torx keys, Halfords do a really good and cheap set). But also a few of the non-torx bolts use somewhat odd sizes that you may not already own, as noted earlier the sump bolt needs an offset spanner, and you'll need BMW specific tools in order to dismantle the forks or steering head. And of course, BMW only sell those to dealers, so you'll need to eBay it or improvise your own. Aside from those tools for the forks and head, it's only cheap items! But oh boy do you not want to start a job then realize half way through that it needs some weird and obscure tool that you don't own. Oh, and I would 100% echo what [mention]Tiggie[/mention] said about the fumoto sump plug. At the best of time I'd already be worried about using an aftermarket plug that sits markedly lower to the ground (and protrudes way more therefore making it easier to catch on things), but on this type of bike? If you ever want to take it off paved streets, I would seriously encourage against using on of them. Aaaand if none of that put you off, they are gloriously fun and satisfying bikes to ride. Despite my truly terrible luck with mine, I did really love it.