ATR G4 GY6 Engine Swap Harness - Honda Ruckus

ATR G4 GY6 Engine Swap Harness - Honda Ruckus

SKU #: ATR-1002
ATR plug and play GY6 engine harness will eliminate the need to fuzz around with wiring your engine swaps! Reduce the chances of errors and problems. Pre-labeled and ready to go!

Please take a look at the drop-down menus for more options.

For those who are looking for a 8-Pole harness, please be sure to add the 8 Hole harness jumper so that it will allow you to run a 8 pole charging system!

10/28/2014: OEM GY6 CDI is now included with the wire harness package!
$168.00 In stock


Availability: In stock

ATR G4 engine swap harnesses are professionally hand made from all brand new wires and connectors. No wire modification that will result in wire color changes or jumps, just a specific color all the way through to where it needs to be. This will greatly reduce the chances of errors that may occur during modifying the OEM harness or a GY6 donor harness. ATR wire harness is 95% plug and play, minor simple adjustment is needed to get the harness to work. Please read the notes below.

With the use of this harness, the stock ECU and electric fuel pump will no longer be needed. A vacuum fuel pump is required.

The Honda Ruckus factory controls will plug directly into this harness, all functions of the controls will be usable like OEM!

11 pole harnesses package includes the following items:

  • Starter solenoid 
  • LED Ready Flasher Relay 
  • Engine Kill Relay 
  • Rectifier for 11 pole 
  • Spark plug coil and wire


G4 wiring harness now comes with a 3 pin connector instead of the 3 extra wires running from the middle (stock fuel pump location) to the front end(inside battery box), just in case the end user would like to wire up their electric OEM fuel pump or other accessories, such as a temperature sensor, tachometer, etc. they are there specifically for future modifications and additions- so there's no need to tear up the wire harness to add wires.


Steady Garage installation tips:

  • Ignition switch wires will need to be wired to the OEM connector. Connecting either colors will work because the color does not matter. Optional ignition switch connector could be added to your order, please select from the drop down menu.
  • For those who are looking to use the indicator light for low-fuel, you will need to keep the LED drive unit (black box under the indicator lights) and the resistor (under where the ECU use to be). The connector for the fuel sending unit will need to be wired to the ATR harness using the OEM connector. This means you will need to cut the fuel sending connector off the the old harness leaving a pigtail, then install it onto the ATR harness by matching the colors accordingly. 
  • Much like any on your ride, the more time you take to organize the harness into your battery box, the nicer it will look. 
  • The large ground wire going towards the engine MUST BE grounded to the engine, NOT the rear frame. Failure to do so will/may cause damages to the harness.