--- product_id: 280887636 title: "Kids Ride On Car 12V DIY Modified Harness Complete Set of Remote Control Circuit Board Wires Switch Gearbox,Used for Children Electric Ride On Car with RS550 Motors" brand: "weelye" price: "€ 155.27" currency: EUR in_stock: true reviews_count: 9 category: "Weelye" url: https://www.desertcart.fr/products/280887636-kids-ride-on-car-12v-diy-modified-harness-complete-set store_origin: FR region: France --- # 2.4G wireless remote control 12V power system Dual RS550 gearboxes Kids Ride On Car 12V DIY Modified Harness Complete Set of Remote Control Circuit Board Wires Switch Gearbox,Used for Children Electric Ride On Car with RS550 Motors **Brand:** weelye **Price:** € 155.27 **Availability:** ✅ In Stock ## Summary > ⚡ Upgrade your kid’s ride with pro-level control and power — because every little driver deserves the best! ## Quick Answers - **What is this?** Kids Ride On Car 12V DIY Modified Harness Complete Set of Remote Control Circuit Board Wires Switch Gearbox,Used for Children Electric Ride On Car with RS550 Motors by weelye - **How much does it cost?** € 155.27 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/280887636-kids-ride-on-car-12v-diy-modified-harness-complete-set) ## Best For - weelye enthusiasts ## Why This Product - Trusted weelye brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety-First Design:** Includes overload protector and secure card-slot connectors to prevent wiring mishaps and ensure durability. - • **Customizable Speed Modes:** Handle switch features two forward speeds plus reverse, letting you tailor the ride experience as your child grows. - • **Precision Remote Control:** 2.4G Bluetooth remote offers effortless parental control with reliable wireless range and instant response. - • **Plug & Play Power Upgrade:** Complete 12V harness kit designed for seamless integration with kids' electric ride-on cars—just add battery! - • **Robust Dual Gearbox Setup:** Equipped with two powerful RS550 gearboxes for enhanced torque and smooth acceleration. ## Overview This Kids Ride On Car 12V DIY Modified Harness Complete Set is a premium upgrade kit featuring a 12V power system, dual RS550 gearboxes, and a 2.4G wireless remote control. Designed for children aged 6-12, it offers easy installation with color-coded wiring and secure connectors, enabling parents to remotely control speed and steering. The kit includes safety features like an overload protector and supports two forward speeds plus reverse, making it a versatile and durable solution for enhancing electric ride-on vehicles. ## Description Kids Ride On Car 12V DIY Modified Harness Accessories Review: Really Nice Kit, But Read This Review Before Buying - Full disclosure, I returned this to desertcart for refund, but more on that later in the review. This is actually a VERY nice kit! I didn't actually install it, but I thoroughly tested its functionality and operation with a voltmeter, and everything worked flawlessly. Honestly, if you're not decently skilled with low voltage wiring, you really shouldn't be buying and attempting to install this kit. It doesn't come with any instructions, but (again if you know what you're doing) it's pretty obvious what goes where. The only thing you have to connect is the two wheel motors (which have color coded wires/connections), the steering motor (which is also color coded wire with a unique connector), and then the positive and negative to the battery. The rest is just routing the wiring harness around the car to install the accelerator pedal, power button, and gear shift. Even the wireless remote simply worked after installing batteries in it. The only part of this install that could be complicated is the steering motor. There really isn't an obvious way to install it, so it would take a little work and ingenuity. Although the steering motor is why I returned it, it wasn't due to the motor itself or even how it would have to be installed. It was because once you install the steering motor that becomes the only way to steer the car -- the steering wheel no longer moves. So once your child does get old enough to drive the car by themselves, the only way they will be able to steer it is if you remove this steering motor. Prior to buying this, I asked desertcart's Rufus AI if this kit allowed for remote steering as well as using the steering wheel, and the answer Rufus returned was yes, claiming the parent's remote control would automatically override the manual in-car controls, but when the remote control wasn't in use the car's manual controls were fully functional. Again, this simply is not the case, and when my granddaughter gets old enough to want to drive the car herself, I don't want to have to go to all the trouble to uninstall (at least) the steering motor. So, depending on what you're using this kit for, it can actually be a really nice kit! Didn't work out for me, but I felt it did deserve a 5-star review because of how nice and well put together the kit is. Review: Exactly What I needed 6v to 12v conversion. Mercedes SL400 - I had found a Mercedes SL400 power wheel on the curb in my neighborhood. I been looking to buy one but people in my area wanted to much for a used one. Found it, did some RESEARCH. Before buying anything and this was exactly what I needed. I even bought the correct gears for the other motor as the car only came with 1 motor. I do have experience with low voltage items and how controllers boards work as I wire them on a daily basis. Set up was easy to understand even though it didn’t have instruction. HIGHLY RECOMMEND CONTROLLER BOARD OR LOW VOLTAGE EXPERIENCE!! In order to understand it all and how it works. Did a lot of small but major mods to the vehicle. But in the end it all came out looking just as when I picked it up. The only visible changes are the power button and the shifter that’s on the dash. ## Features - Kids Ride On Car 12V DIY Modified Harness Complete Set of Accessories ( No Battery). Tip: The product requires the use of a 12V lead-acid battery specifically designed for children's electric vehicles. - Complete Set of Accessories : 2.4G Remote Control, Control Box ( Circuit Board ), Wires, Switch, Pedal, Overload Protector, 2 Pcs RS550 Gearboxes, Steering Motor. - 2.4G Bluetooth Remote Control，Easy to Install Repair and Replace. A complete set of wiring harnesses, you only need to connect the battery and the motor to use. - Please pay attention to the positive and negative poles of the circuit when connecting it, otherwise it is easy to damage the circuit. Please check the original gearbox model, RS550 gearbox size is larger than RS390. This requires measuring whether the vehicle has enough space to install a large gearbox. - There are card slots at the interface, which are not easy to loosen. To install or remove, press and hold the protruding part of the plug.Please check if the steering gearbox slot matches your electric vehicle. - The product is 12V and can be charged at the P7 socket. If a charger is needed, please search for ASIN: B07L1RT6C2。 - This product does not have lighting function.The handle switch has two forward speed gears and one backward speed adjustment. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08TVV49K5 | | Age Range Description | 6-12 years | | Best Sellers Rank | #136,137 in Toys & Games ( See Top 100 in Toys & Games ) #325 in Kids' Ride-On Replacement Parts | | Brand Name | weelye | | Customer Reviews | 4.0 out of 5 stars 90 Reviews | | Item Dimensions | 7.2 x 7 x 6 inches | | Item Dimensions L x W x H | 7"L x 3.5"W x 2.6"H | | Item Weight | 3.7 pounds | | Manufacturer | weelye | | Manufacturer Maximum Age (MONTHS) | 168 | | Manufacturer Minimum Age (MONTHS) | 168 | | Manufacturer Part Number | DZRX19 DJ | | Material Type | Plastic | | Set Name | 1 | | Size | Large | | Theme | Vehicle | | UPC | 788481732237 | | Unit Count | 1 Count | ## Images ![Kids Ride On Car 12V DIY Modified Harness Complete Set of Remote Control Circuit Board Wires Switch Gearbox,Used for Children Electric Ride On Car with RS550 Motors - Image 1](https://m.media-amazon.com/images/I/61El-OxAXSL.jpg) ## Questions & Answers **Q: Does this kit work on pacific cycle kids trax model # kt1565mw** A: POSSIBLY NOT AS THOSE UNITS HAVE LIMITED SPACE BETWEEN AXLE YOU CAN USE IT BUT ONLY ONE MOTOR WITHOUT SERIUOS MODIFICATION REMEMBER TO GET 12 VOLT BATTERIES AS WELL6 VOLT MAY NOT HAVE JUICE TO RIDE OR DIE QUICKLY **Q: Does this work on trex 3500 dodge dually kt1302wm?** A: You need to remove dialog wiring to replace with kit. **Q: How many teeth are the pinion gears on the motors** A: Hello, the motor is 10 teeth, small teeth **Q: Will this work for the huffy 12v corvette?** A: You need to remove corvette wiring to replace with kit. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Really Nice Kit, But Read This Review Before Buying *by C***T on December 2, 2025* Full disclosure, I returned this to Amazon for refund, but more on that later in the review. This is actually a VERY nice kit! I didn't actually install it, but I thoroughly tested its functionality and operation with a voltmeter, and everything worked flawlessly. Honestly, if you're not decently skilled with low voltage wiring, you really shouldn't be buying and attempting to install this kit. It doesn't come with any instructions, but (again if you know what you're doing) it's pretty obvious what goes where. The only thing you have to connect is the two wheel motors (which have color coded wires/connections), the steering motor (which is also color coded wire with a unique connector), and then the positive and negative to the battery. The rest is just routing the wiring harness around the car to install the accelerator pedal, power button, and gear shift. Even the wireless remote simply worked after installing batteries in it. The only part of this install that could be complicated is the steering motor. There really isn't an obvious way to install it, so it would take a little work and ingenuity. Although the steering motor is why I returned it, it wasn't due to the motor itself or even how it would have to be installed. It was because once you install the steering motor that becomes the only way to steer the car -- the steering wheel no longer moves. So once your child does get old enough to drive the car by themselves, the only way they will be able to steer it is if you remove this steering motor. Prior to buying this, I asked Amazon's Rufus AI if this kit allowed for remote steering as well as using the steering wheel, and the answer Rufus returned was yes, claiming the parent's remote control would automatically override the manual in-car controls, but when the remote control wasn't in use the car's manual controls were fully functional. Again, this simply is not the case, and when my granddaughter gets old enough to want to drive the car herself, I don't want to have to go to all the trouble to uninstall (at least) the steering motor. So, depending on what you're using this kit for, it can actually be a really nice kit! Didn't work out for me, but I felt it did deserve a 5-star review because of how nice and well put together the kit is. ### ⭐⭐⭐⭐⭐ Exactly What I needed 6v to 12v conversion. Mercedes SL400 *by R***Z on June 12, 2023* I had found a Mercedes SL400 power wheel on the curb in my neighborhood. I been looking to buy one but people in my area wanted to much for a used one. Found it, did some RESEARCH. Before buying anything and this was exactly what I needed. I even bought the correct gears for the other motor as the car only came with 1 motor. I do have experience with low voltage items and how controllers boards work as I wire them on a daily basis. Set up was easy to understand even though it didn’t have instruction. HIGHLY RECOMMEND CONTROLLER BOARD OR LOW VOLTAGE EXPERIENCE!! In order to understand it all and how it works. Did a lot of small but major mods to the vehicle. But in the end it all came out looking just as when I picked it up. The only visible changes are the power button and the shifter that’s on the dash. ### ⭐⭐⭐ Just what I needed but it seems to be failing after 2 weeks *by D***K on October 9, 2023* This was somewhat the kit that I needed. Was a little disappointed that the shifter was not the “normal” connector but rather some type of circuit board connector. And the right wheel seems to be failing already. I don’t know if it’s the motor or the 12v module which is failing, but something is failing. The whining noise from the module is annoying too. Takes a long time to get up to full speed and the L gear on the shifter is no different than the H gear as well. I don’t fully regret the purchase, but wish the quality was a little better. Will be pulling this out and upgrading again to an 18v battery upgrade when my son is older ## Frequently Bought Together - Kids Ride On Car 12V DIY Modified Harness Complete Set of Remote Control Circuit Borad Wires Switch Gearbox with Motors, Children Electric Ride On Car Accessories - weelye 2 Pcs Children Electric Car Tire Adapter Connection Clip for Gear Box Transmission External Gear Accessories Connect Gearbox Motor and Wheels for Kids Powered Ride-Ons Replacement Parts - weelye 12V Battery Charger for Kids Ride On Car, for Best Choice Wrangler SUV Car a Variety of Electric Baby Carriage Ride on Toy,Universal Battery Supply Power Adapter --- ## 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.fr/products/280887636-kids-ride-on-car-12v-diy-modified-harness-complete-set](https://www.desertcart.fr/products/280887636-kids-ride-on-car-12v-diy-modified-harness-complete-set) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-09-09*