Kid Trax Power Wheels 6v to 12v Upgrade

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Introduction: Kid Trax Power Wheels 6v to 12v Upgrade

I created this instructable because I couldn't find any source on the internet where someone converted one of these from 6v to 12v. Being a typical Dad I put a 12v battery in it and it worked awesome for....45 seconds until the relay board was fried. I am sure this will work for multiple kid trax 6v units, this one was the Honda 4 wheeler atv model.

This instructable will show you how to wire in a new 12v relay on a Kid Trax Power wheel. Cost was $1.58. Do this at your own risk. The motor may burn out faster as it was sized for a 6v system.

Step 1: If You Put a 12v Battery in This Will Happen...

I assumed that these units were made to 12v specifications and they are not. This 2 channel 6v relay board is under the unit in a panel accessible by 4 screws. As you can see on the bottom of the green circuit board the wire melted and acted like a fuse. Cut this out, clipping the wires as close to the board as possible and throw out the board. I mounted my 12v battery under the front axle with some wood and zip ties.

Step 2: Buy a 2 12v Channel Relay

I found this one from Chinese girlfriend for $1.58. I got a 30A for $4.54 but, make sure you have a fuse/circuit breaker coming off the battery.

Step 3: Wire It In!

On the right side of the relay board:

  • you have your + and - 12v power
  • the small blue and white wires are the "triggers" this is forward and reverse on the controller of the car.

On the left side you are building a H bridge circuit as shown in the wiring diagram

  • The big blue and white wire go to the motor (or com1 and com2)
  • when you get everything wired you will need to test reverse and forward directions to make sure you have the correct blue and white wires in the correct relay slots.
  • in the interest of time, I stripped the wire and connected a lead to make a "Y" type cable. I think took a piece of paper and cut a hole in it. I than had a can of spray plastic dip and sprayed the connection through the hole in the paper. You can see this in the photo on the red cable.
  • I have many other things going on in this 4 wheeler, so I used wire caps to tie it all together, tucked it all back in the panel and put the cover with the 4 screws back on.
  • Hopefully this will save you a lot of time, I spent too long trying to determine what made this tick.

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    66 Comments

    0
    jarrodcolon
    jarrodcolon

    1 year ago

    Here’s how I wired mine up and everything’s working. Switch on (Red) and Switch off (white) are paired together. Orange is constant connected to the batt+. Yellow is rev. Blue is forward. Black is ground or batt-. If you’re running a speed controller, the relay boards batt+/-will connect to the Motor+/- section on the controller. Hope this helps some folks.

    4BDB326D-E372-4B54-BB81-2718DD8B2956.jpegF9A24B3D-6DF0-44C6-8922-308FF940C27A.jpeg580E6315-444B-4A25-993D-ABB6D364B05B.jpeg15AFFB16-1DBE-4050-9718-688B983D4E9E.jpeg
    2
    TatianaY1
    TatianaY1

    3 years ago

    If you planing change power board I decided add is a picture with wire description I hope some one will find that info useful. If someone will decide keep existing board than you will need change 2 relays 15A 12VDC/125VAC Relay Switch $2 each from radio shak Catalog #: 2750031below is a link also you will need replace 2 diode 12V 15Amp
    https://www.radioshack.com/collections/relays/prod...
    Thank you.

    Factory relay board.jpg
    0
    Nissantun3r
    Nissantun3r

    Reply 2 years ago

    Hello I have the control board that you posted a photo of. How do I wire it to the 12V relay purchased by original poster?

    0
    Stealth2007
    Stealth2007

    Reply 2 years ago

    I just found this, I have the same board that went out and trying to convert it to the board above. Any help?

    0
    Stealth2007
    Stealth2007

    Reply 2 years ago

    Yes, whats the diagram to replace the board that looks like what "TatianaY1" posted to the 12v upgrade? In the original its a little different.

    0
    Nissantun3r
    Nissantun3r

    Reply 2 years ago

    I finally got the time to wire mine up and it worked. I did have a faulty relay so ebay seller sent another from China. It's all good now.

    IMG_20200422_172853.jpgIMG_20200422_172759.jpg
    0
    jarrodcolon
    jarrodcolon

    Reply 1 year ago

    Hey @Nissantu3r, I know this is an old post but you recall how you wired the Switched in (RED) and Switched out (WHITE) wires? I can't find specifically how that was done. I assume the Constant Power (ORANGE) can just go into the DC+. Thanks for any help you can offer.

    0
    philo171
    philo171

    Reply 1 year ago

    This trick I found it to figure out what real wires are on the wiring diagram. Once you trace them out it gets easy.

    4
    roconnor1868
    roconnor1868

    Reply 2 years ago

    I’m struggling with this one. With the board shown in this picture I’m looking for how to replace with a new relay. Any help would be greatly appreciated even if you draw it out with a crayon lol

    68D5096E-2E8B-4B0A-96B7-AE26D09419F6.jpegimage.jpg
    0
    Stealth2007
    Stealth2007

    Reply 2 years ago

    Thats exactly what I am trying to do!

    0
    philo171
    philo171

    Reply 2 years ago

    From your pict, right side wires would be- bottom black and red, forward signal, reverse signal. The other 6 would go on the left. The relay will have the labels where to go. Make sure to have a 10amp fuse before this. I upgraded this unit to a 30amp relays because I didn't have a fuse, now I do.

    0
    Nissantun3r
    Nissantun3r

    Reply 2 years ago

    I still have the relay but haven't wired it up due to having children, being off work and such. I havent gotten an answer yet either.

    0
    Stealth2007
    Stealth2007

    Reply 2 years ago

    That makes 3 of us lol, I am no expert either.

    0
    philo171
    philo171

    Reply 2 years ago

    I just recently replaced the board because a relay got stuck. Maybe this will help- Hook up you voltmeter to the red and black wires that are supposed to go into the board. Turn on the ca, and you should see 12v on the meter. These are the wires that go on the right side of the relay. Flip the board over and it will tell you what terminals to hook up. On mine gnd and vcc are the bottom two.

    The top and bottom relay are just forward and reverse. Those get hooked up by the H bridge diagram.

    3
    roconnor1868
    roconnor1868

    Reply 2 years ago

    First let me thank you you for responding and trying to help. I’m wondering if this is an easier way to look at it and maybe you could just match the letters to the numbers for us.

    913A8A75-5409-44F3-8699-6C12A3810A46.jpeg
    1
    philo171
    philo171

    Reply 2 years ago

    I would wire it like this and it should go, our units are different so you may need to swap the signal wires around. I am not sure what the constant power battery does on your unit, you may need to investigate further (headlamp? sounds?). Remember a rely is just a an inline switch to handle the surge.

    20200331_152425.jpg
    0
    Stealth2007
    Stealth2007

    Reply 2 years ago

    Thank you, I am going to wire this this morning.

    0
    roconnor1868
    roconnor1868

    Reply 2 years ago

    Any luck?

    0
    Stealth2007
    Stealth2007

    Reply 2 years ago

    YES! I have got everything to work on my sons John Deere Gator. Now I am waiting on another motor to come in to make it duel 12v motors, and putting my makita drill battery in it :)