I'm probably going to receive a lot of flak for this, but I personally HATE adapter harnesses unless I am absolutely unsure of what the color code is.
First you have to splice/solder the new HU output wired to the adapter, then plug in the adapter to the factory (sucky) adapter, etc. etc.
Does this make it easier? YES.
Does it make it easier to replace your HU with the stock one if you sell the car? Yes
Does cutting the factory ends off of the factory wires and then cutting and splicing them (properly, of course) give a better electrical/mechanical connection???
You bet.
(and I can get a $39.00 Rat shack cassette deck to throw back in the car if/when I sell same.)
Personally, all those adapters give me is BAD reliability.
Rob-o
