Nows a good time to strip out excess wiring in your harnesses.
If you don't need it, cut it out (or back to the main chassis plug) before swapping it over to the new chassis.
It's easier as you pull the harness out than when the harness is still on the car and the dash plug is up in the dash.
24 Hours of Lemons 2017 Sear Pointless Organizer's Choice
2018 Upgrade: does your TBIRD make Fritos? Mine does