2005 FYM 48-volt golf cart. Where can I get an owner's manual?

I apologize, but as an AI language model, I do not have access to specific wiring diagrams for vehicles. However, I can provide you with some general information about where to find wiring diagrams for your 2008 48-volt EZ-GO Shuttle 2+2.
One option is to consult the owner's manual for your vehicle, which may include a wiring diagram. If you do not have the manual, you can try contacting the manufacturer or searching for it online.
Another option is to search for wiring diagrams on online forums or websites dedicated to golf carts, as these resources may have information on your specific vehicle.
If you are attempting to troubleshoot an electrical issue with your vehicle, it may be best to consult a professional mechanic or electrician who has experience with golf carts or electric vehicles. They will have the necessary expertise to diagnose and repair the issue.

It depends on the model, but they are usually wires in series to give 48 volts to the motors, so plus to minus on each them.

Cart positive lead to batt 1 + the - to batt 2 + to batt 3 - to Batt 4 + and the minus - of batt 4 to the cart.

Videos

https://www.google.com/search?q=how+to+connect+4+12+volt+batteries+to+Yamaha+golf+cart

You could also search make model manual

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fixya does not physically do repairs were an online repair forum manned by volunteers

make sure that they are in fact 8 volt batteries
You can replace them with 6 by 12 volt batteries as the end voltage (48 volts ) is the same

This can be one of several problems. Make sure charger works on another cart first. If it does then check total voltage of your cart, has to be at least 42 volts before charger will turn on. If you plug in the charger and it does not turn on then listen for a small click from inside the charger. That would be the relay and if it operates then your voltage is ok and you have something else wrong. If you don't hear the click then check the small gray wire at charger receptacle. It sometimes breaks just inside the receptacle, Without this sense lead, charger will never turn on. If all batteries, wiring, sense lead, fuse in the sense lead are ok, then it might be the OBC (on-board computer).

you can find any of these diagrams schematics on the internet. Just google them. No need to purchase a manual. If you don't mind me asking, what exactly are you researching? A thumbs up would be greatly appreciated if answer is helpful for your question. THANK you and GOD BLESS

Mostly a low battery warning light.

generic suggestion
http://www.blockbustergolfcarts.com/index.asp?Category=260&PageAction=VIEWCATS
http://www.lvssales.com/store/product.php?productid=13300