Wiring

FIRST thing to do is sit down and make lots of notes and THINK

Go over to MyMopar and download the factory service manual that best fits your car, and the aftermarket wiring diagrams (2 pages) which are sometimes easier to follow but not as detailed. Some of those leave out some options

Decide what to do on connectors. The 67 turn signal switch connectors are difficult to deal with. I don't know where to get replacement terminals. "easy wire" does this by giving you GM style connectors.

Sit down and "ohm out" (continuity check) your brand new harness to figure out FOR SURE where everything comes from/ goes to. On mine (not that brand) I CHANGED a few wires at the fuse panel

MARK wires that don't jibe, such as power windows, for other uses you may have, or pull them out and get rid of them.

Then read through the manual

(by the way post a link to the manual for your new harness so we can help you here)............

and make notes on what goes where.

THOSE HARNESSES LEAVE YOU COLD on a few things, such as dome lamp wiring and any options on the car

ALSO BE AWARE you need to deal with the unique wiring of the Mopar ignition switch, IE the IGN1 "run" and the IGN2 bypass circuit. You may have to add one more wire for the IGN2 circuit