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Engine Wiring Harness - Swapped 2GRFE MR2 R2

Engine Wiring Harness - Swapped 2GRFE MR2 R2

$ 1,999.95


All new, custom-built harness, specifically for the MR2 2GR application!

We are trying to keep these on the shelves for same-day shipping but due to current order volume, we are out of stock and are currently building these to order. Lead times are 3-4 weeks usually on standard applications. NO CORES NEEDED to get started!

To get your new 2GR running in your MR2 without any electrical gremlins, the easiest thing to do is to swap in a brand new harness, custom-built for your setup. Our harnesses provide full functionality of the necessary 2GR features, integrated seamlessly into the factory MR2 chassis. This is not a conversion service, but rather a new harness entirely custom-built in-house for the 2GRFE MR2 setup. No old core engine wiring harness for your 3S/5S or 2GR is needed (but they do help)!

Through years of building in-house 2GR swaps, we design and specifically optimized a new harness layout for simplicity, reliability, and ease of use. Although not a fully "tucked" harness, this harness has been designed with its visual impact on the engine bay in mind. The harness is neatly "tucked" out of the way where possible while staying stable and not unnecessarily awkward to install and use. 

This harness comes with one of our Rat2 Motorsports Tach Adapters, allowing the factory MR2 AW11 or SW20 tachometer to be used with the 2GR. No modification is needed to the dash at all! With this setup your car's factory wiring remains effectively untouched, making the 2GR swap reversible or interchanged at any time. We also include ECU mounting brackets, a custom-designed OBD 1 port with built-in diagnostics testing, and a universal OBD2 port for standard OBD data communication with the ECU. The harness also comes with the electronic throttle and throttle adapter for the e-throttle setup in the SW20 or AW11. The throttle harness has a plug in the engine bay, allowing the engine to be removed for future maintenance without cutting any wires. 

 

We have even designed and manufactured custom plugs to make SW20 harness 100% plug-and-play with 0 crimping, soldering, or any weird awkward plugs. 

 

The AW11 kit comes with the same 2GR harness but universal body integration plugs that will need installation on the end-user side. This also assumes a frunk battery relocation with breaker/fuse relocation. 

 

 

We will contact you to confirm the options and specs for your harness.

  • 5 Pin or 2 Pin 2GR ECUs (Stand-alone options available as special request)
  • All AW11 and SW20 chassis are available. (ZZW30 available with special request)
  • Custom-built, premium harness construction
  • Brand New OEM Toyota plugs and hardware
  • High-end abrasive and heat-resistant harness wrap
  • INCLUDES the RAT2 TACH ADAPTER!
  • AC prewired for those running AC
  • OBD1 Custom Junction Box with original MR2 functionality 
  • OBD2 port with mount
  • ECU Mount Kit (5-Pin Harness)
  • Comes with a Drive-By-Wire harness extension for the e-throttle
  • Best way to clean up the engine bay and add that custom, aftermarket look and simplicity
  • Comprehensive wiring manual
  • Full Tech Support for install/diagnostics
  • FREE SHIPPING to the lower 48 USA

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