Well... i did buy one of those aftermarket harnesses, and i also confirmed with other sources that the wiring colors are correct. Like Crutchfields and other wiring diagrams for my car. So i am pretty sure i got the wiring right. i was very careful with all steps. Heck i even checked my stock HU since it had the information on the unit itself. But then again i'm not saying i can't make mistakes =)
But from what you are saying, i can assume that the MK2 needs only to be grounded with the black wire? And not me getting another ground source to the sled cage itself? Am i making sense? i didn't mention earlier that my stock head unit had a seperate ground wire screwed to the outer case, and to the car chasis. It's a used car so i couldn't tell if that was stock or not. Thanks for replying. =