I hope Conko comes back and downloads the PDF I posted in my previous reply.
It has a clear picture and wire colors.
CO

Hopefully he does!
Thanks for posting up your pdf too, I'll take a look at it as well!

Thanks for posting. I can actually read it. Is there supposed to be some diodes in the wiring. I have read something about that but don’t see them on the diagram. As I mentioned before the wiring on mine is really a mess so I can’t tell from it.

The diagram I posted in this and the other thread is actually from Goki.
The original set up was basically acting like a trickle charger apparently.
So I believe you do have to put in a diode. I'm a millwright and NOT an electrician so I'm not really the guy to answer that but I believe Silver_Pharaoh is the guy to answer that for you.
In this thread, on the first page, I believe the info is all there. Maybe he'll chime in here.
A member called Garemie posted the diode "For the record the Goki diode is just a Taitron T6A10." in this thread: viewtopic.php?f=1&t=18163
Just click on the link.

Goki has been out of business for a long time now. The owner got ill in 2016 and then passed away. A former employee posted this info in this thread: viewtopic.php?f=1&t=16706
Just click on the link.

This site is extremely slow now. Most of us got old (I'm 63 in march) and just left the site and sold the buggies. I still own 3 of the FL350's. We had a LOT of very talented tradesmen and skilled people on this site at one time. One of the guys named Lee actually worked for Honda. Many members don't even show up or are gone now. I rarely show up either. This site however is THE #1 site for info on these machines. If you need to know ANYTHING about them this is the place but you will have to search the site for info.
The best way to find something here is to use the search box above.
In the search box type ONE word ONLY and hit enter. If you don't so it this way then you will get to many hits.
When the list of threads comes up there will be another search box there on the right.
In that box type ONE word ONLY. Keep doing this as many times as you want until you have narrowed it down. Some common words will be ignored like "Engine" "Honda" etc.
Also at the very bottom of any thread you read will be an area where there a similar threads to the one you are reading. You can click on them to read.
CO

EDIT: Do you have a manual ? You can get a pdf one here for free: https://oddatv.com/free-fl250-fl350-factory-manuals/
Click on the link above.
CO