Megasquirt 3 Hemi Gen III

Sorry about the inbox. I'll take care of it.

Yes you'll need to make a harness and or buy one. Here's a couple of links to help you figure out what you need.

How to MegaSquirt Your Chrysler Hemi Engine - DIYAutoTune.com

10' MegaSquirt Wiring Harness for MS3X

10' MegaSquirt Electronic Fuel Injection Wiring Harness (MS1 / MS2 / MS3 Read

You'll also need to set your car up for fuel injection and replace the factory drive by wire throttle body with a cable operated throttle body.

Hope this helps.

Joe Dokes