Check the male contact on the pin of the cowl first to make sure it's intact and has continuity to the bulb base. If good, clean up the ground and contact by the bulb, and then on the tab that the manual latch hooks over.
If those are all good, use a volt meter to confirm voltage at the female end of the cowl pin contact. If nothing, remove the seat and fuel to get access to the wires and female contact. New female contacts can be bought from Scooterwest.
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