









⚡ Upgrade your kid’s ride with power, precision, and pro-level control!
The POLYNX 12 Volt Power Wheel DIY Wiring Harness Kit is a comprehensive upgrade set for children’s electric ride-on cars, featuring a high-power 40A 200W control box, 2.4G Bluetooth remote, and user-friendly plug-and-play connectors. Designed for ages 18 months to 8 years, it offers enhanced speed control, durability, and easy installation, making it ideal for custom or replacement projects.













| ASIN | B0BGP91ZK9 |
| Best Sellers Rank | #171,448 in Toys & Games ( See Top 100 in Toys & Games ) #209 in Kids' Ride-On Replacement Parts |
| Customer Reviews | 4.3 4.3 out of 5 stars (77) |
| Item Weight | 1.28 pounds |
| Item model number | 12RX71 |
| Manufacturer | POLYNX |
| Manufacturer recommended age | 18 months - 8 years |
| Product Dimensions | 7.87 x 5.51 x 3.9 inches |
D**S
As described worked great
Worked great 👍
C**E
Build surprised well !
Only purchased this for the main controller and end up using all the pieces and switches due to them being better quality and more Kid Friendly. Accidently put 24V to it and reversed polarity and it's still working like a champ. This kit is great for any vehicle pretty much (even homemade), it comes with everything beside the vehicle and battery. I'm really impressed with them.
N**S
Good, but not plug and play
I used this kit to repair my child's ride on toy that had a bad controller board. Because it was an off-brand there were no direct replacements so I decided to just replace everything. Overall, it seems better made than what the car came with. However, a wiring diagram should have come in the box rather than just the Amazon listing. Unless you have a model very similar to this one, this is a kit for someone comfortable crimping/soldering wiring terminals. Mounting the switch gear and running new wires is a project in and of itself. The end result seems good. I'm also running an 18v power tool battery conversion kit and it seems to handle it just fine.
K**N
Worth all your moneys !
Probably the best darn module and harness out there . Currently running 2 12V 40000 motors and man it runs like a beast ! Been running for a whole year and we abuse this tiny car
J**E
It works
Simple a few mods on the old best choice jeep and now I can fight for control of the Jeep against a 2yo that is the next she hulk
D**D
Works well
Worked well, once I set it up.
F**.
Cheaply made
Very cheaply made and it did not work for the ride on car I purchased it for. Ended up wasting my money on the $150 car and this harness, because after hooking it all up and it not working, there is no way to replace the originals in the car. This thing made me waste so much money that I have to literally just throw away
E**G
Le doy 5 estrellas me sirvieron perfectamente ❤️
M**Y
Had a bunch of issues with the product my car doesn’t have a steering motor and it didn’t work so I had to rewire
A**E
Me gustó este producto para ponerle un poquito más de velocidad a un carrito de mis nietos es de que se diviertean más ,Feliz navidad
Trustpilot
1 week ago
1 day ago