stereo wiring harness help

Did some research on stock stereo removals and didn't see what I was looking for. I removed mine to install my iSimple and it only comes up as AUX so I can only use the ipod and not the stereo controls. Upon further looking I only have 2 harnesses that hook into my JBL stereo, the iSimple hooks into the middle slot but there was no harness for me to remove. The iSimple install says you unhook one harness, plug the iSimple harness in and then the stock harness into the iSimple adapter. But like I said, I don't have the harness that goes in the middle. My question is, is there suppose to be one? I had a double din installed a while ago and it was stolen and I dunno if the thief just cut that harness off or anything.

 

Or if someone has installed an iSimple adapter do you have a link handy or tell me how?

 

Fiend club! Sorry i cant help. If i remember right i think my non jbl stock system had 3 wiring harnesses

 

Word. I'm thinkin about just getting a new cd player. loved my double din but don't want it to get stolen again.