Instrument Cluster Removal, Help!

Good for you! Since I'll be taking out the instrument panel in my Barracuda for the first time this winter, I'm curious about the wiring harness plug(s?) that attach to the panel. Does the plug just pull straight out or does it have a lock that must be released? Require a twist to remove/install?

Do not twist or bend on those connectors. Pull straight away.
I have a tapered plastic tool that was once a shrimp deveining tool from the grocery store. I first wrap a round of electrical tape around the connector. This keeps the female terminals routed through the correct ports even if a few stay on the male pin as the connector moves away. I use the forementioned tool working around the connector to gently pry it away.
Other little tips that may herlp... I use white electrical tape and leave it on there. Makes the terminals easier to see when reinstalling.The round connector is keyed to attach only one way. The flat one with 3 connectors can be the most difficult to re-attach properly. There are several ways to put it on wrong. If you'll wrap a narrow strip of tape around those 3 male pins it will identify the line/amgle.
Apply some di-lectric lubricant to all those male pins.
Take note of where the red wire connects to the amp gauge before removing or better yet flag that post with tape temporarily while the panel is out. Yes that terminal is labeled 'RED" on the board but you can't see that during R&R.
Due to back problems I can no longer work from under the dash. I've had to learn how to remove the panel while sitting in the seats and nealing at the door jamb. I cant work hard so I work smart :)
Hope this helps