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Old 08-09-2012, 04:38 PM   #1
Pablob
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Default Wiring for Lights and accessories

I have a early 2001 EZ-GO TXT Freedom I am going add a 12v battery and put it in parallel with the main batteries. What need to find is a wiring diagram where someone has move the existing stock lights and tail lights over to the extra battery.
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Old 08-09-2012, 04:45 PM   #2
ab46501
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Default Re: Wiring for Lights and accessories

I don't think wiring the 12v in with the battery pack is a good idea. Things will not charge properly with the batteries not being equal.

If you want to run lights off 12v battery then you need to seperate it from the pack and it will need to charge seperately. Just wire the lights directly to it then.
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Old 08-09-2012, 11:40 PM   #3
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Default Re: Wiring for Lights and accessories

Quote:
Originally Posted by Pablob View Post
I have a early 2001 EZ-GO TXT Freedom I am going add a 12v battery and put it in parallel with the main batteries. What need to find is a wiring diagram where someone has move the existing stock lights and tail lights over to the extra battery.
No! NO! NO!!!

You'd be putting a 12V battery in parallel with a 36V battery pack. You'd see lots of smoke and splashing acid (might be the very LAST thing you saw). NOT A GOOD IDEA!

Keep the 12V battery completely separate and wire the lights directly to it. You can charge the 12V separately with a standard car charger.

RLW
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Old 08-10-2012, 06:37 AM   #4
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Default Re: Wiring for Lights and accessories

I got the wiring diagram from this site you connect the 12v into the main at a 12v between to six volts so readings at the main still sees 36v the charger will only see 36v it will take a little longer to charge the system. You also put switch on the 12v so when you riding it disconnects the 12v that way you are just using for your accessories
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Old 08-10-2012, 07:15 AM   #5
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Default Re: Wiring for Lights and accessories

If I understand what you are saying correctly, you want to put a 12V battery in parallel with of the two of the six 6V batteries that are connected in series to form a 36V battery pack.

I believe the net result would be about the same as just using the two 6V batteries to run your accessories.
That being the two batteries will be continuously under charged and will die sooner than the other four.

Unless you enjoy replacing your battery pack prematurely, either use a 36v to 12V reducer or an entirely separate 12V battery for accessories.
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Old 08-10-2012, 08:14 AM   #6
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Default Re: Wiring for Lights and accessories

Why not just add a small 12v and use a trikle charger?
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Old 08-10-2012, 09:20 AM   #7
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Default Re: Wiring for Lights and accessories

Johnnie
Here is a post from last year that has a setup like what I am going to do.
http://www.buggiesgonewild.com/elect...battery-3.html
Where the switch is on the 12v I would turn off while running that way the only the main pack would be use for the motor. Do you think the 12v when charging will put a strain on the two 6v's it's connected to?
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Old 08-10-2012, 11:28 AM   #8
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Default Re: Wiring for Lights and accessories

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Originally Posted by Pablob View Post
.................
1. Here is a post from last year that has a setup like what I am going to do.
http://www.buggiesgonewild.com/elect...battery-3.html

2. Where the switch is on the 12v I would turn off while running that way the only the main pack would be use for the motor.

3. Do you think the 12v when charging will put a strain on the two 6v's it's connected to?
1. Andy4639, the guy that actually drew the wiring diagram had this to say it the thread where the diagram was originally posted:
"The switch and fuse were for my setup in the 04 PDS in case of emergency use. My kids had a bad habit of riding the cart with the radio on all day and never turned it off. So when I went for a ride that night the battery would be dead. I got tired of this after many times of telling them so I hooked the switch and fuse inline to 2 of the 6 volts so if the 12 volt went dead it would be able to draw off 2 of the 6 volts only enough to get home on. Switch is normally open unless the 12 volt is dead. You have to watch the 6 volts and keep them up on the same level as the other 4. It worked great though."

2. It was for emergency use only. Specifically to power the lights at night, if his kids had ran down the 12V accessory battery during the day.
It was not used to charge the accessory battery.
Also note the second to last sentence, he charged to two 6V batteries up to the same level as the rest after using them to light his way home.

3. The 36V battery pack is six 6V batteries connected in series and when they are on charge the same current passes through all of them equally, so the get the same charge, give or take a little for the inevitable slight differences in supposedly identical batteries.

If you place a 12V battery in parallel with two of the 6V batteries, the charging current will then have two current paths and none of the three batteries (Two 6V and One 12V) will be properly charged.

The are a ton of variables depending upon the respective Amp Hour rating of the 12V and 6V batteries, but 12V batteries tend to have much lower AH rating than 6V batteries, so the 12V battery is likely to be overcharged while the 6V batteries it is in parallel with will be undercharged, relative the the four 6V that are still in a series string.

If you want to know how much, subtract the AH 12V battery from AH of the 6V batteries and divided the result by the 6V AH. The charge current flowing through the 6V batteries that are paralleled by the 12V battery is reduced by that percentage.

The net result is going to be roughly the same as just connecting the 12V accessories across two of the six 6v batteries, which also imbalances the pack and reduces battery life expectancy.


FWIW: Having to connect two chargers is a royal pain in the you know where, but I've heard that installing a 12V accessory outlet (Cigarette lighter outlet for those among us that aren't PC) and getting a 12V trickle charger that plugs into works pretty. Just plug in two chargers into the cart's two receptacles.
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Old 08-10-2012, 11:36 AM   #9
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Default Re: Wiring for Lights and accessories

Quote:
Originally Posted by Pablob View Post
Johnnie
Here is a post from last year that has a setup like what I am going to do.
http://www.buggiesgonewild.com/elect...battery-3.html
Where the switch is on the 12v I would turn off while running that way the only the main pack would be use for the motor. Do you think the 12v when charging will put a strain on the two 6v's it's connected to?
My apologies -- I thought you meant you were going to put the 12V battery in parallel with the entire 36V pack.

You'll still have problems when charging even if you parallel the 12 with 2 6Vs. The charge current will be equally distributed between the 12 and the 6s and the 6V batteries life will be shortened.

Best to keep the 12V completely separate and charge it separately.

Just my $0.02....

RLW
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Old 08-10-2012, 12:12 PM   #10
camaroluvz28
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Default Re: Wiring for Lights and accessories

Im with the other big boys on this one...Always keep your 12v acc sep from the rest of the pack if adding another battery, but the all-time best way(although not the cheapest) is gunna be a reducer...no extra charging/no killing batteries...
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