It's was a used bike when he bought it, didn't get a manual, it spent the first 5 weeks in the Kaw. shop for carb, timing shaft?, and assorted other problems, I thought maybe they didn't connect a wire,or was hoping for something that simple. He has $4000.oo in the bike now and that's about more than it's worth.
Start the bike, put a VOM across the battery terminals, you should get 13.5-14.5 volts.
Are you running a LOT of electrical items? Light bar, aux lights, etc.
Maybe an issue with the ignition switch, one of the alternators (there are 2 on the Kaw), or regulator/rectifier. For those, it's probably got to go back to the shop. But first look at the wiring at both rectifiers to see if they are chafed or broken.
If you have Microsoft Word, I can email the wiring diagram to you. Le me know, or I could send as a .jpg file (file size will be larger). Just post me your email address, use the private message feature if you want to keep your email private. Assume you have a non-California model, if it is Cal, let me know that too. The wiring diagram is from a 2001 1500 Vulcan Classic service manual - it has 1500 N1~N2 (Canda and USA), 1500N3(Canada and USA), 1500-N (except USA, Canada and Australia), and 1500-N (Austalia) wiring diagrams. Let me know which one you need. These are small and hard to read but there is also another generic charging system diagram that I will send that may help you as much or more.
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