Yeah i've seen those also but the blues are nothing compared to the ultimate, The Ultimates your seeing are normally used where mine is new, Some of the systems come with a universal harness, greddy doesnt even make a universal harness since that's impossible since the ecu's aren't the same in all cars and need to be wired entirely differently. They also don't come with the software cd, they say you can download the software which you can but you need the cd first to up load everything onto your e-manage ultimate and formulate a base map then you can download the updates without that you have to sick with whatever tune or version of the system the seller had on the piggy back system before you got it, which is useless to you since no car is gonna be the same when it comes to tuning it. These are things that are failed to be mentioned by the Ebay sellers. They also sell a complete harness kit on Ebay which is they build half the harness for you then you have to make another harness to fit your car( picture below)So if you go on Ebay and look for E-Manage Ultimate with everything like the car specific harness, software cd and brand new unit you'll see your looking at no less then 800US. I'm just trying to get rid of extra stuff i know it's a good product so i dont want to see anyone being had on ebay with there "oops i forgot to tell you need this cd of oops yeah you need to build the rest of the harness yourself kinda thing" I'm not stuck at my price i love skylines and us owners rock haha so i'm happy too do best offer to help someone out if moneys tight, but the lowest i can go is 500US for everything otherwise i'm literally robbing myself!
The so called complete Harness Kit
The Harness and the car specific harness attached!