has anyone installed this harness into there car

 

Looking at them online http://www.ezwiring.com/wiring_harness.html
shows them to be generic replacements, which will take a lot of cutting and splicing on to the factory connectors. These may be good for custom street rods where there are components from several makes and models.
I helped a guy install one in his '37 Ford and it was a pain. I have an electronics degree, too.
You have to know how every circuit works and pretty much schematic it out to match up with your new harness. I will not do that again (unless it is for a true frankenstein car...)

If replacing a harness, it would be easiest to buy a repro harness for the car you are working on (if they have it of course). American Autowire gets some good comments and reviews here.
They are more costly, but will save you a lot of time and frustration. Also, it will look factory without the splices and mess.

 

I have used 3 of them and was very happy with them. Pretty easy install but into oddball cars, '42 Chevy, '53 Ford F100 and an old Scout. They are still working fine and I would use them again but if you can get a model specific one it would probably be easier.

 

They do include schematics, albeit not as colorful and easy to read as AAW's.
I know a guy who put one in his $85,000 completely rebuilt 1973 Camaro.

I personally favor American Autowire
I've tried Painless, and they kinda suck without included schematics.
If you're a newb to wiring, try to spend the money on the simplest kit to install.
For me, an investment in LESS aggravation is priceless.

American Autowire is VERY newbie friendly with 6 to 8 idiot proof COLOR sub schematics included.
I uploaded all of mine awhile ago, you can see them here. http://www.yousendit.com/transfer.ph...Mm1ubVZMWEE9PQ

Here's one of the 6 subschematics that were included in my Highway 22 kit.
AAWHwy22Schematic5.jpg

 

That does look like a great kit. I like the schematics, they are much more professional looking and easier to understand.