Help with USB Hub power issue
I am going crazy trying to figure this out. I have an Opus POL 5v 15W supply to a usb hub. This is fed from ACC line. When I kill ACC the computre stays on for 10 minutes or so due to my DSSC which I installed as well. The problem is when the ACC gets killed, the power to the hub is cut, but then the computer feeds 5v through the USB cable, to the hub, and back through my ACC circuit. This causes my AMP and other items to stay on, and I can not exit and lock the car.
I have tried cutting the USB + line @ cpu, not go, devices do not work on hub. I have tried relay energized by ACC, no go, stays latched due ot 5v on load...Please Help.