---
product_id: 629942711
title: "12 Volt High Power Wheel Harness Kit, Self-Made Children Electric Car Full Set for Wires DIY Modified Switches and Weelye 2.4G Remote Controller Kit Replacement Parts"
brand: "polynx"
price: "R2894"
currency: ZAR
in_stock: true
reviews_count: 5
category: "Polynx"
url: https://www.desertcart.co.za/products/629942711-12-volt-high-power-wheel-harness-kit-self-made-children
store_origin: ZA
region: South Africa
---

# 12V High Power Output 2.4G Remote Control Sync One-Button Quick Installation 12 Volt High Power Wheel Harness Kit, Self-Made Children Electric Car Full Set for Wires DIY Modified Switches and Weelye 2.4G Remote Controller Kit Replacement Parts

**Brand:** polynx
**Price:** R2894
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade Your Kid’s Ride with Power & Precision!

## Quick Answers

- **What is this?** 12 Volt High Power Wheel Harness Kit, Self-Made Children Electric Car Full Set for Wires DIY Modified Switches and Weelye 2.4G Remote Controller Kit Replacement Parts by polynx
- **How much does it cost?** R2894 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/629942711-12-volt-high-power-wheel-harness-kit-self-made-children)

## Best For

- polynx enthusiasts

## Why This Product

- Trusted polynx brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power Your Ride ⚡:** 200W high power kit with slow start for smooth acceleration and high-speed motor compatibility.
- • **Effortless DIY Upgrade 🔧:** Complete wiring harness with one-key quick installation sockets for battery and motor cables—no sweat, no fuss.
- • **Versatile Switch Suite 🎛️:** Integrated start, high/low speed, forward/backward stop, and pedal switches for full ride customization.
- • **Trusted Expertise & Support 🤝:** Backed by 10+ years of maintenance experience and a professional after-sales team ready to assist your DIY journey.
- • **Total Control at Your Fingertips 📡:** Includes 2.4G Bluetooth remote with easy frequency matching for seamless forward, backward, and speed switching.

## Overview

This 12V High Power Wheel Harness Kit is a comprehensive DIY upgrade set for children’s electric ride-on cars, featuring a 200W high power control box with slow start, a full suite of switches, and a 2.4G remote control. Designed for easy one-button cable installation and compatibility with high-speed motor gearboxes, it empowers parents and hobbyists to enhance toy car performance with professional-grade components and expert support.

## Description

Products include:1. Harness2. Switch3. Remote control and controllerOperating Voltage: 12 VoltsProduct introduction:1. A complete wiring harness for DIY riding power wheels, just need to connect the power supply and motor, and it can work. 2. Including start power switch, high-speed and low-speed switch, forward and backward stop switch, pedal switch3.200W high power kit with slow start function, can match high speed motor gearbox4. Please check the switch size to make sure you can install it on your toy car5. The battery cable and motor cable are all one-key quick installation6. When using the remote control for the first time, it needs to be matched (Please press the top white button ( 3-5 seconds ) to sync with your car), there is a manual in the remote control box

Review: 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
Review: 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

## Features

- 12V DIY Self-Made Ride On Power Wheel Kids Electric Toy Car Full Set of Wiring Harness Switches and 2.4G Bluetooth Control Box Kit Upgrade Parts
- 12Volt Weelye 40A 200W High Power Wiring Harness Control Box Kit,Can Match High Power High Speed Motor Gearbox Upgrade
- Complete Set of Parts: Remote Control and Receiver, Wire, Start Switch, High and Low Speed Switch, Forward and Backward Stop Switch, Pedal, Overload Protector, Charging Port
- The battery cable and motor cable are all one-button installation sockets, which is convenient for replacement, maintenance and installation, and the controller has a slow-start function
- The working voltage is 12V, we have more than 10 years of maintenance experience, professional after-sales team, you can consult us if you have any questions
- When using it for the first time, you need to match the frequency of using the remote control for control. Please follow the instructions on the remote control for frequency matching.This product is a DIY product, not necessarily compatible with all models, and requires a certain hands-on ability

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BGP91ZK9 |
| Assembly Required | No |
| Batteries Included | No |
| Batteries Required | No |
| Colour | Red |
| Customer Reviews | 4.3 4.3 out of 5 stars (75) |
| Date First Available | 26 July 2023 |
| Educational Objective(s) | Game, play |
| Generic Name | 12VWIRES |
| Included Components | controller, remote control, switch, wires |
| Item Dimensions LxWxH | 20 x 14 x 9.9 Centimeters |
| Item Weight | 581 g |
| Item model number | 12RX71 |
| Manufacturer | POLYNX |
| Manufacturer recommended age | 18 months - 8 years |
| Material Type(s) | Plastic |
| Model Number | 12RX71 |
| Number of Game Players | 1 |
| Product Dimensions | 19.99 x 14 x 9.91 cm; 581 g |
| Remote Control Included? | Yes |
| Remote Control Type | Radio |
| tech_spec_battery_description_toys | 12V |

## Images

![12 Volt High Power Wheel Harness Kit, Self-Made Children Electric Car Full Set for Wires DIY Modified Switches and Weelye 2.4G Remote Controller Kit Replacement Parts - Image 1](https://m.media-amazon.com/images/I/61ShxQG72AL.jpg)

## Customer Reviews

### ⭐⭐ Review
*by M***Y on 9 August 2025*

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

### ⭐⭐⭐⭐⭐ Review
*by A***E on 28 December 2023*

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

### ⭐⭐⭐⭐⭐ Review
*by D***S on 14 December 2025*

Worked great 👍

## Frequently Bought Together

- POLYNX 12 Volt Power Wheel DIY Modified Wires,High Power Self-Made Children Electric Car Wires Harness and Power Wheel Remote Kit Weelye 2.4G Remote Controller Kit Ride On Replacement Accessories
- weelye RS380 12V Steering Motor for Remote Control Car, Children Electric Car Steering Gearbox with Motor, Children Ride On Car Replacement Parts
- ExpertPower 12v 7ah Rechargeable Sealed Lead Acid Battery

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.za/products/629942711-12-volt-high-power-wheel-harness-kit-self-made-children](https://www.desertcart.co.za/products/629942711-12-volt-high-power-wheel-harness-kit-self-made-children)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-16*