Re: Head unit
You need a special converter box to trigger the digital signal to power up the amp. Its an odd setup, another one of those glorious issues that apply only to WK's it seems.
Anyway, I don't recall the name of the box, but it's about $100 online. Once it's wired in, you should be fine.
I had to replace my existing aftermarket head unit with a new one. I deleted the box as it was a disaster of wiring with melted electrical tape all over it. The harness was already trash, so I just cut it out, figured I'd build a new one; done it many times. Yeahhh....short end of the story is I am using 6x9's in boxes in the back until I can rewire my whole system to bypass the failed factory amp. Turns out the head unit wasn't the fault, it was my amp going out. So I can either spend 250 bucks for parts or just rewire my speaks. ...so I have redneck 6x9's in the back instead ~LOL~