48 volt to 12 volt on your golf cart 

For 48v to 12v you hook red (positive) to 1st battery in series and black (ground) to last battery in series so you have all 48v going to your converter (transformer) and it makes the power coming out 12v

I believe that using transformer for 48v to 12v conversion will draw from all batteries equally. If you hook it up so it only activates with your key or your draw should only be when key is activated for everything. Standard is for headlights to turn off if key is off. No draw. Very good design 👍 If you hook directly to a single battery you could have a constant draw if accessory has an idle mode like anything with gps or some cameras that monitor things when vehicle is not in use. They suck the energy out of just 1 battery instead of the 4 batteries like I have in my toy. I have some stuff now off key but couple accessories I want to use without key in it. I have my reasons 😂. I have 2 ways to turn the energy on and off to those. Safety reasons. Thanks again for video 👊

Do you also not need an inline fuse on the red wire running from the battery?

When connecting the transformer, can you use different guage wires? What should the guage be on the 48volt side vs 12 volt?

Does the transformer put a drain on the batteries when not in use..?

What is the best size fuse for the lights?

link to the switch panel please

Dose the step down converter drain the 48 Volt battery by just keeping it connected? even when the converter is not in use? just curious

I must be missing something I got mine wired with no transformer just used the positive and negative on the same battery no problem ever

Go Bills!!!

You do realize that wiring up the transformer directly to the batteries will cause a constant drain on the batteries.