Yes, much easier with the front seat removed. I honestly should pull the seat more often than I do, it makes working under the dash MUCH easier, and the seat only takes a couple minutes to remove and reinstall.
If you're going to pull the under dash harness, just make sure you take some pictures of where everything is first so you know where to plug it all back in. The diagrams are very helpful, but they don't show how it all goes under the dash.
