Finally got 'round Tuit and installed my HMIM permanent. Originally, I wanted it under the tank next to the petcock so that the security switch could be turned on/off with the same hand as the fuel. Anyone watchng would be none the wiser that there is a switch down there too. Unfortunately, I couldn't find a place to mount the box that it didn't interfere with the petcock, the side cover or the throttle/choke components. I did find a reasonable alternative. I tie wrapped it to the frame rod right behind the electrical panel. this is a '77 550K by the way.
Here is a dry fit:
Here it is painted black and tie-wrapped in place
Had to notch the side panel a little, but it's a Meier, not a stocker so who cares?
Here it is finished!
Think I'll put some black fuel line on the switch itself to further disguise it.