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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    62 Comments

    0
    jenniferdoser
    jenniferdoser

    Question 11 months ago on Step 3

    I've been given a 12V Kid Trax convertible but it needs a new battery. I absolutely don't want to spend $70 on one. I know Power Wheels, etc. can use cordless drill batteries, but since this has a circuit board, I'm guessing that's not an option? Or can I modify/update the circuit board to be compatible?

    I've never done anything like this before. I may not have the skills...but I'd like to try if there's an easy work-around! TIA!

    0
    Pengw1n
    Pengw1n

    Answer 5 months ago

    I have a Kid Trax Viper new and modified it the day I received it. You can buy batteries from Amazon for more than half the price Kid Trax sells them. I've bought two and install it in series to make 24V. I've also bought this 2 Ch relay board but the 24V version as well as a step down DC voltage converter (24V-12V) to power the lights and radio. Pretty simple for me to install but I'm a techy guy. I'll write up a detail instruction so many who see this post can follow if you own a Kid Trax 12V car.
    https://www.amazon.com/gp/product/B00A82A2ZS/ref=p...

    0
    Pengw1n
    Pengw1n

    Reply 5 months ago

    Here is a write up.
    Modify your power wheels or any electrical kids ride on car at your own risk. I'm not responsible for anyone's decision to modify their child's electric kids ride on cars.

    0
    awoo434
    awoo434

    1 year ago on Step 3

    Hi I have a roll play gmc 6volt same circuit board in the picture can someone explain to me how do I run my wires. Any thing helps I’m no expert.

    0
    philo171
    philo171

    Reply 1 year ago

    Everyone gets hung up on step 3. You should have 6 wires coming from the car 2 are the battery, 2 are the "triggers" and the last 2 are beefy ones that go to the motor, identify what they do first, then you can figure out how to wire it in.

    0
    awoo434
    awoo434

    Reply 1 year ago

    Is there a way someone can draw a diagram.
    I have the rollplay 6v gmc truck.

    0
    waderushton
    waderushton

    1 year ago

    Looking for help I bought the same 12v 2 channel relay , I'm trying to wire into kids Trax Silverado I'm wondering where to connect my 6 wires from harness. Orange - constant battery, blue - forward signal, black - ground, white - switched power out, yellow - reverse signal, and red - switched power in. I have 4 other wires also my blue and white from motor I have connected into com on each relay, also the main power and ground from battery connected to DC + and - . Iv tryed a few things can't seem to figure it out, I have upgraded to a new 12v motor and I have a new 12v kids Trax battery. I should also add it was a 6v set up that I'm trying to convert if that's wasnt clear . Thanks for any help in advance .

    0
    philo171
    philo171

    Reply 1 year ago

    Post some picts

    0
    derekstein
    derekstein

    Reply 1 year ago

    Did you figure this out? I have the same set-up and am unsure where to connect the orange-constant battery, black-ground, white-power out, red-switched power in wires onto the new 12v 2 channel relay. I am also upgrading to a 12 volt setup.

    0
    TatianaY1
    TatianaY1

    2 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 1 year 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 1 year 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
    Nissantun3r
    Nissantun3r

    Reply 1 year 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 1 year ago

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

    0
    philo171
    philo171

    Reply 1 year 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.

    0
    roconnor1868
    roconnor1868

    Reply 1 year 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
    0
    philo171
    philo171

    Reply 1 year 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 1 year ago

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

    0
    roconnor1868
    roconnor1868

    Reply 1 year ago

    Any luck?

    0
    Stealth2007
    Stealth2007

    Reply 1 year 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 :)