It's the wrong bulb. It needs to be a 12v 1.7w bulb. You can get the correct bulb from
Partszill.com. It's number 9 in the schematic. I've never used them so I can't vouch for them.
It's Suzuki part number 09471-12108
I found one at a familiar website I bought lots of parts from when I had my scooter.
http://www.partsforscooters.com/164-76
I ordered from partzilla so I'l just have to wait