Golf Cart (EZGO RXV) - Installing a 12V Reducer with Kill Switch and Terminal Bus Bars

In this video, I'll go over my 12V reducer install. Here are majority of the parts used.

Follow-up video here (front bus bar, LED DRLs, LED Underglow, Horn Addition):

Parts Used:
36/48V to 12V Reducer (30A):

Terminal Crimper:

Terminal Bus Bars:

Spades for Bus Bar:

Kill Switches (not sure I love the quality of this thing):

[allanmullen]

Hey Brian, Thanks for your detailed information on the installation of the 12V reducer. I have been researching the type of toggle kill switch to use. Your video was the only one that I could find with the details I needed. Thanks for the links, that made my research really convenient and with confidence that I am on the right track!

[Rubenchavez]

Great work man! I like the switch idea for when you put the cart up for long periods of time.

[RobertTozzi]

I like the terminal bus bars for connecting multiple lithium batteries (in parallel) to the controller. I'm choosing to use a breaker box to distribute my low voltage equipment. That will add a little overload protection.

[tonyarico]

Thanks Brian, I'm doing the same thing but wasn't sure about the rating I needed for the toggle switch since you can't find a DC48 volt one. I'm going to use the same switch you used. Also I like the idea of putting in the bus bars.

[bjbagsic]

About to do this on my rxv but why terminal bus bars instead of fuse boxes? I’ve seen people use fuse boxes? Also what’s the purpose of kill switch?

[chuckb]

Not sure if this will be answered but my TXT has a pull switch to turn the lights Off and On.... can I simply use that as my toggle for the voltage Reducer? This brings up my original confusion lol, if I'm breaking power to the light circuit using the pull toggle must I still install my 36v to 12v reducer in between the power going to it? Thanks

[rayarsenault]

It should be fused right where the positive taps the battery. If you get a rub through before the reducer, you wire will glow until it burns thru.

[chartersjr]

So I've been confused about the positive and negative terminals that run from the reducer to the batteries. Is there a specific battery terminal you use to connect your power line or can you use any battery in the golf cart?? Also the ground that comes off the reducer, does that get grounded to a battery or does it get grounded to the frame on the golf cart? Thanks

[JibberJabber]

From what i've heard ( I own an RXV as well) the controller is very sensitive to any current draw, eliminating the option of wiring from the key switch that why you elected to go straight from the batteries with the kill switch for minimizing a parasitic draw over time?

[teeroee]

Hey Brian, I bought a red Hawk light kit. Came with a voltage reducer with five wires. Two go to the neg and pos. And two go to the light kit harness, and one goes to the positive side of the key switch. Problem is I have a ezgo unique four position key switch like yours in this video. What wire is it out of that four wire harness in the back of the key switch do I tap into? Please help!

[djDram]

I have purchased the same Reducer and Switch and once everything is hooked up the switch does not actually control the power to the reducer. regardless of position there is still power. It seems as if the power from the pack is blowing out the switch almost immediately. Any thoughts?

[chetspencer]

Did you run the positive and negative wires from the first battery in the circuit to the toggle switch? If you did, you only ran 12 volts to the switch and reducer????

[andyriddle]

Any issues with this configuration since the video was recorded? I'm concerned out the kill switch lasting.

[nwsimak]

I installed a kill switch and turned it on and it works but the switch got so hot I couldn’t touch it. It’s a 12v 30a switch. Do I need to find a higher voltage switch? My cart is 36v

[qunta]

Hello. How did you wire up your toggle switch? Every time I connect mines it blows the fuse going to the converter.

[chadprice]

Thanks for posting. I just installed a LED Lightbar and I have power going to the switch but nothing to the light. It is a 48V system. I think i need to get a reducer 48v - 12V to fix this issue. Are these reducers really weatherproof? Is there a certain brand you would recommend? any other advice on what might be the issue for my lightbar is appreciated.

[codyjoyner]

What amp fuse did you install between the kill switch and the reducer? Essentially the 48 volt section of the wire?

[bigshowradio_]

Hey! I bought this reducer and when I hooked the 48 volt wire to the beginning and end of the battery bank, it sparked! So I stopped. Is this usual?

[mholverson]

Watching this video is going to make me sick! I had to stop not even half way through. Stop moving around so much!!