Trionic 5 (T5) Conversion Wire Harness
The gold standard for Trionic 5. Often replicated, but never duplicated, don’t let others outsourced high prices convince you there is a better all-around product available. Ease of installation through over a decade of building and installing these harnesses in daily drivers to race cars.
After messing around with factory T5 harnesses and modifications to fit a classic 900, I found it took more time to repair old broken connectors and clean greasy tape residue than it would be to start from scratch with all OEM or better quality materials. A drop-in replacement harness that you could just plug in and drive away was the goal. I've also worked to improve the documentation and support you need to take the plunge into Trionic 5 as easily as possible. This is the 5th revision of the Trionic 5 Conversion harness since I started building them in 2012. Some additional improvements include it being lighter and more flexible, on-board OBDII diagnostics and Tefzel shielded signal cable. This gives the harness a lifetime of trouble-free operation and the reliability you've come to expect out of all MCS custom parts. It goes without saying that these are built to last and function as well as they look. Each harness is hand-built here in the USA using quality components and the highest standards. It is fully ready to install with all classic 900s, just specify your model year. Stock 3-wire oxygen sensor is configured as well as the T7/T8 Boost Control Valve and is plug-and-play with our T5 Flywheel CPS kit. Harnesses are built to order with a typical lead time of 6-8 weeks, but times may vary based on the production schedule.
