Check on bikebandit. Look up the part number and then perform a site search on that part number. I believe the 360t, 400f, sone 550 f and k models and some 750 k and f models will work. Bikebandit lists the specific years and models. Some eBay sellers list out the applicable models too.
Camelman
Here's what I found when I searched bike bandit for switch compatibility. I'd check whatever you buy to make sure though.
1975 Honda CB360T View schematics
1975 Honda CB400F View schematics
1975 Honda CB550F View schematics
1975 Honda CB750F View schematics
1975 Honda GL1000 View schematics
1976 Honda CB360T View schematics
1976 Honda CB400F View schematics
1976 Honda CB550F View schematics
1976 Honda CB550K View schematics
1976 Honda CB750F View schematics
1976 Honda CB750K View schematics
1976 Honda GL1000 View schematics
1976 Honda GL1000LTD View schematics
1977 Honda CB400F View schematics
1977 Honda CB550F