Topic: CB500 Simplified Cafe Diagram

[PurduePete]

Hey guys,

I am modifying a 73' CB500 into a cafe racer. Before I get groans, not going to modify any OEM components and will be building a plug and play wiring harness so that I can go back if I ever wanted to.

That being said, I'm struggling a little bit. There are a lot of diagrams out there. Most are pretty helpful but the regulator/rectifier combo unit is making things a little bit complicated for me. Was hoping that someone can help. Already designed my own wiring harness schematic that left out the horn and may end up including turn signals just in case but is mostly complete. Would you guys look and see if you can explain what the black and red from the regulator/rectifier are meant to do. Used a wiring diagram from the link below to help me build the schematic for mine.

https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwjopaKYqqzQAhXCeCYKHal9ADIQjRwIBw&url=http%3A%2F%2Fforums.sohc4.net%2Findex.php%3Ftopic%3D120570.0&psig=AFQjCNGr4XENW8Gr_LTjQbF1B1hqPtyAJg&ust=1479353168988262

The white wire to the rectifier is outlined so that should explain the difference. Remember no horn but it should be complete enough to get an opinion on the regulator/rectifier wiring right now. Would like to get it right so that I can post it up and maybe help someone else out in the future. I know a lot of schematics already exist but just don't want to modify anything stock.

[PurduePete]

Thank you very much for your response. That's the info I was looking for. Let me modify my diagram tonight and put it back up. You are right about the different circuits, should have done that.

[PurduePete]

I updated the diagram. Planning on using 16 ga. wire about everywhere by the way. I modified the fuse from the battery to the switch to 10 amps and added a fuse block. Also added a handlebar switch so that I can put on turn signals if I want to or not. Added the horn too. The fuses in the fuse block will be 5 amp, planning on everything being LED to reduce draw. Going to go pretty small on the battery. There will be room on the fuse block for some spares even. Lets just pretend that the coils are hooked up to a 10 amp fuse... forgot to connect it in the software.

I understand the regulator/rectifier setup now. Didn't know it monitored the battery basically so that explains the black. Thanks for the information and help. Hopefully this one is a bit better.

[Gene]

I learn so much just from reading Cal's posts about electrics.  Not hijacking, just sayin'

Carry on.

[PurduePete]

No, the one that I was looking at getting did not have separate ground paired with it. Assumed that the body of the regulator was the ground on that one. I'll look into it a bit more. Might end up buying a more expensive one just to be sure that I get the right thing. The one from Oregon cycle or 4 into 1 that is recommended.

I really appreciate the helpful post from the gentleman. Helped me understand better and I'll have a better final product because of it too.