I'm becoming famously good at leaving my key in the ignition switch and walking away from the bike. Once every 3 weeks or so, regular as clockwork, I return to a bike with a dead battery.
Thankfully, the three places that I regularly park for long enough to kill the battery all have steep enough slopes for an easy push start, but that's not ideal. What I really want is a beepy thing that tells me the key is still in.  

There might be some way to co-opt the side-stand switch to activate a buzzer when the stand is down (but only when the key is in!), which would have the desired effect.
Any ideas of where in the circuitry you could put one, if anywhere?

Had a lady alert me to having done that up at the Dragon earlier this year. Felt like a goon.

I think the sidestand switch grounds out the system when down, which is the opposite of what you need, which is for the buzzer to be energized when you have the sidestand down and key on.

There is probably a way to trick this out though..I am sure someone intimately familiar with the electrical system will come along and offer some suggestions...and if it is easy I might do it too  

justin_o_guy2 wrote on 07/11/17 at 08:15:27:

Stop flipping the kill switch.

Agreed. I see the kill switch as an emergency kill switch, not as a normal means of shutting down the bike. I use the key 100% of the time.

I made the same mistake, a few times. I have also just switched off and Still left the key, because I was not ready to stand up and put the keys in my pocket. So, Now I switch off and stick the key in my gas cap. I do use the kill now, since I have trained to get the key off and out. Recommend you avoid the kill switch until it's reflexive to look at the key.

I never use the kill switch.  Test it now and then to ensure that it works.
Also, I am afraid of turning on the parking light and leaving the bike. Thinking about disabling that feature.

Once left the Transformer rectifier switch in a Gulfstream in the on position. Nothing shows up except the switch position.  Embarrassing the next day with two flat Nicads- a lot worse than it sounds.

I've used the key for shutdown since day one, so I've never had a problem remembering the key.  My problem is that stupid parking position on the switch.  More than once, I've left the lights on and come out to a dead battery.

I use the kill switch only because I like the bike parked in gear ,but I've trained myself to remove the key with my left hand right after that.However  if I were to install a buzzer ,I think ( not being a sparktrician )I would power it of the taillight  and ground it through the sidestand in that way when you put the stand down the buzzer would sound if the key were in run or park positions.( avoiding a dead battery) It wouldn't however tell you to remove the key if in the off position.(theft is your problem ,you can't blame the bike)but if you were to leave the key in the bike in the off position someone turning it on to steal it would activate the buzzer and might think you had the bike alarmed.

You want to park in gear and shut the engine off?  put down the kickstand.