Well, given that I was there throughout the installation and watched, I did observe what was going on. The underdash must be removed. The glove compartment must be removed. These are just a couple of screws, so no big thing, I suppose. We did have screws, however, that simply wouldn't budge. I mean those things must have been put on with LocTite or something. The wiring loom has multiple different kinds of multi-pin connectors. Wiring diagrams needed to be consulted. The new wiring harness has to be installed under trim parts. And so on. And, for someone who KNEW what they were doing, it took at least two multi-hour and one quick-fix session to get it all working properly.

But, hey, if it can be done DIY, great. I'm just re-telling my own experience. The OP's install wouldn't be as painful as mine was, I don't think, given that he's not talking about an install with all the gadgets I now have.

CW