From my experience with my 1600 Louichie, I have to start my bike with the clutch lever pulled in due to the inhibitor switch connected to it.
Check battery connections first. Maybe a dirty or loose cable there.
My stepping stone to what I'm riding now.
Suzuki GSX250 '82
Suzuki GSX-R600 '00
Vulcan VN1600 Classic '06
Fitted: tachometer, genuine windshield, K Drive hard bags, upgraded Meanstreak clutch spring with Judges washers, Cobra Speedster Longshots.
Up coming items: Dobeck TFI controller, Chucksters air filter, volt meter, oil and temp gauges.