I think it may be faulty. I have mine wired the exact same way. I can get the volume to work, but nothing else. When I do the test, it indicates that the red/gray isn't hooked up, per the flashes, but when I use my ammeter to test, I have continuity from the car side of the wiring harness to the box itself, so its definitely hooked up correctly.
I'm ok with just volume control though, I'm easy, and rarely shift channels or modes.
__________________
NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z
Porsche: 93 968 / 23 Macan GTS / 93 968
|