The blue wire on the radio Molex Mini-Fit connector is daisy-chained off the single blue remote output of the empeg. And it doesn't hang loose. There's only a single 12v remote output from the empeg and sled and it's split onto two connnectors. Once you have the ISO adapter in place, then it will be the only place a blue wire is left loose.

When he said "isn't connected to anything" I understood that it was a dangling wire. Anyway, same same as far as the reception problem goes.

If the car has a power antenna that isn't being raised that would obviously explain some reception problems. But if the antenna isn't powered, then the blue wire isn't needed.

It's odd that someone else just posted within the past day about how their tuner module was giving them excellent (even better than expected) reception.

Bruno