If you’re re-using the 5 Speed Tremec TR3650 transmission for your 05-10 Mustang Coyote Swap AND using Make It Modular methods ( whether it’s our plug and play swap harness or you’re hardwiring it ) you need to use a 13-14 GT500 transmission harness that’s been modified.
This modified harness can also be used for 2011-2014 Mustang GT owners looking to swap to the Tremec TR6060 or T56 Magnum 6 Speed
Save yourself some more time by purchasing an already modified harness done by us. This will allow your swap to be that much easier. The speedometer and reverse light connectors are lengthened, along with the correct pin relocated in the ECU connector so that your speedometer functions after the swap!
Whether you’re swapping an 05-10 car to Coyote or an 11-14 GT to a TR6060/T56 Magnum, the speedo will have to be recalibrated in the tune for accuracy and cruise function.