James, Are you working to the same definitions as us?
By modern standards, a complete original Rapide should be fitted with virtually no electrics.
It should have a magneto providing ignition sparks but hidden under a cover at the front of the engine, a dynamo with regulator charging a battery which powers headlamp, taillamp and horn. Horn button and dipswitch on the handlebars complete the wiring. The taillamp includes a brakelight operated by a switch on a rear brake rod.
Which bits are you missing and do you want to rig the bike for modern riding or to look standard?