Please forgive me if this sounds at all condescending but to me it looks like you're using a sledgehammer to crack a walnut, the switch you pictured is not the one you want, yes it would work BUT that's a switch from something like an early 750 or 500, notice it has high/low on it and your left hand switch should also have hi/lo on it, so duplicating some wiring, which only makes thing complicated.
This is the switch to marry up with your left hand one
https://www.cmsnl.com/honda-cb550f2-super-sport-550-four-1977-england_model17121/swassy-statkill_35150377013/ notice it only has 3 positions for the lights, off, park or pilot and headlight, you select the hi/low with the left hand switch. Park or pilot would keep the sidelights on, if the states has those of course, so the small bulb under the headlight bulb and the rear light, off would of course switch all the lights off. You would of course have to remember to switch them back on again after starting.
If however you are not bothered about fitting original switches there is another option. Modern switchgear has the lights running through the starter switch, so when you go to start the bike and press the button it breaks the contact keeping the lights lit and starts the bike without that drain, as soon as you release the button the lights come back on. To me that sounds a better option, it should also be simple enough to wire in as Honda tended to keep the wire colours the same throughout the years.
What model bike is this actually for?
