Funny you should mention that as the whole issue of Southern California (So-Cal) freeway speed, lane location, and lane splitting never ceases to amaze me down there. I take some solace in the fact that on the desert section of interstate 40 I can cruise at relative high speed and calm low traffic conditions except for the occasional 18 wheelers I must slalom through and pass. But once on the So-Cal freeways everything changes to race pace. incorporate the horn circuit to work on the same switch as the trigger finger light switch since the purpose is the same.
The main benefit of riding over here, besides the incredible year round riding weather, is the added benefit of splitting lanes...read that as "we never have to sit in traffic" while the transplanted tourista stupido's clog the roads. There are only a couple of stretches in SoCal where you can sit back and cruise, one headed out your way and the other just north of Oceanside. I almost never cruise out the 10 and only hit I-5 when it's work/job related. I hear ya on the saddlebags and narrow passages; I've been know to "click mirrors" on occasion, usually up around LA or the OC...dumbass drivers up there still think they're in downtown Tokyo or Saigon and just crowd ya like in a subway. You won't see me running some expensive bar-end mirrors, just too much expense having to replace them on a monthly basis. I've already had to replace both brake and clutch levers last year, due to "close encounters" with asleep drivers.
Prior to going naked on my current Bandit, I took the headlight assembly apart and installed some LED's, in the upper corners of the light module. I then wired them to a wigwag device I bought at a mailorder police supply place. Depending on the law (where you're at), you can run them "intermittently" as a warning device provided the flash rate is not the same as the LEO's on the BMW's. I can't begin to tell ya how I could clear a wide path at night with those things pulsing. Granted, I didn't run them all the time, but at night if I encountered stupid cagers while splitting, I would hit the hidden switch on the dashboard and light up the lane....think of Mose parting the Red Sea while riding a Bandit
I actually passed a couple of CHP's while doing that and got a "whatever dude" wave from them
Horns: I run a pair of Cadillac horns (about 128db's) I snagged at a wrecking yard. Yeah, you will have to run a relay and fab your own mounts. Since the horns were free (they fit in my toolbox), the price was right since I already had a relay mounted.
I took the existing brackets, a simple bend here and there, shorten the bracket and they mounted up under the tank, poking out just above the valvecover. I will have to remove them to do a valve adjust but they are louder than hell and guaranteed to wakeup even a lurking ditch weasel, if you catch my drift.