[Thomasluke7899]

Take the parking brake wire and connect it with ground in the radio harness. Then connect that to the ground. It makes it easier and looks cleaner.
Everything else is color coded.
As long as the harness plugs into the car harness you are good.
It's always a good practice to take the dash apart first and then wire up the harness once the kit and harness has been checked for fitment.
Wiring the harness is the easy part. Making sure you don't break any of 37 year old plastic is the hard part.

 

[Thomasluke7899]

That screen and those climate controls....that freaking clock....what time is it....shiiit how you feel?
It's 5 o'clock somewhere