Motorcycle and Scooter appreciation

Couple of days ago the blinkers stopped working on my XT600, turned out one of the connectors on the circuit breaker broke off. Lights still worked (although dimmed and both lights would light up when braking, instead of only the rear one), bike still started (kickstart). Called around to find out that the part is no longer being manufactured, but one store still had it somewhere, which they send to me for a lower price than i could find 2nd hand, which was nice. Hope this fixes it and i haven't fried the blinkers or anything as i suck with electrical stuff. Also still having some problems when riding above 4000rpm on constant gas, seems to skip a little bit or something, thinking about dirty carbs but haven't changed the sparkplug yet and don't know if it has ever been changed in 30+ years so will start doing that this week. Other than that, so much fun riding around a (basically) huge dirtbike. Also nice to have instant torque, as compared to the BMW F650 i used to ride before, which didn't really do anything under 3k rpm.

Next to that, how do you guys clean your bikes? I want to get everything cleaned up because that hasn't happened in a long time either, but don't really know where to start, as there is dirt/grease/mud/whatever caked on everywhere. Just spray a shitload of WD40 on everything greasy, toothbrush for all the small cracks and places and a rag for everything else? Probably best to not use high pressure waterjet to blast it all off right?