Locating "pin" is on the metal bracket on the 88. Honda changed A LOT things on the 90. But, yes, the switch gear got the "90's" treatment. Same stuff as the "new" 1990 VFR that year.
Of course Capt is correct. Honda put a small bent tab on the right side of the plate cover. I didn't see that when I was photo shooting without my glasses on.. hahaha