is there a quick connect body harness for the door or do I have to take the panels off and disconnect everything and feed it though the hole the all the wires are coming into the door from the body?

 

You have to take the door panel off and disconnect the harness. That's for a 2nd gen blazer anyways. Not sure what your driving...

Edit: noticed the 95, so that would be a second gen. And the front doors are the same on 2 door and 4 door.

 

If I remember correctly there are plugs up in the dash but much easier to take the harness out of the door instead. Has been a few moons since I have worked on one of those though.