Here is a link to wiring up 4 Way Hazard Lights on a Honda Valkyrie site. The wiring mod also gives the option of also wiring in a piezo electric buzzer. So that you wont go riding round like a nimrod with your turn signal flashing away.
While these mods are originally developed
for a Valkyrie be assured that the wiring color codes are the same
for our Silverwings and, indeed,
for most other Honda motorcycles & scoots.
http://www.rattlebars.com/mtz/fourways.html
I also found an even less expensive way to wire
for 4
ways --using the already existing signal flasher-- on a Singapore Silverwing forum, but I've been unable to figure out how to post the
wiring diagram-only to this forum.
Hmmm, now where to mount that new switch?...Tim