This jumper harness allows you to use a 12-15 Civic Si engine harness and 12-13 Si ECU when swapping a K24z7 into a 09-13 Honda Fit. There are a few wires that will need to be moved around on the A connector. You will also need to have the new Si engine computer, GE dash, and GE keys married together through the “all keys lost” reprogramming procedure to get everything to communicate. This can be done at the Honda dealership or VSM locksmiths.
Parts you will need from the Civic Si:
- 12-15 Civic Si engine & charge harness
- 12-15 battery sensor
- 12-15 Civic Si OEM O2 sensor
- 12-15 Si OEM secondary O2 (if needed)
- 12-13 Civic Si engine computer**
- 12-15 Civic Si Alternator
The two wire connector with the green clip goes to the battery sensor
The four wire connector goes to the secondary O2 sensor
The one wire connector goes to the starter
**You must make sure you use a ECU from a 2012-2013 Civic Si only. The 2014-2015 Si ECU uses push button start and will not work with the GE fit.
You will need to check and verify emissions rules and laws in your state for compatibility. These kits are intended for off-road use only.