I'm currently wiring a radio in a 2003 tahoe and Im losing power to the exciter wire just a few seconds after plugging it into the radio. It has power long enough to display the time then looses power. If you leave it plugged in and cycle the key it will not turn on at all. But after leaving it unplugged with the key on after a few seconds it has just enough power to turn on then shut back down. Sent from my Pixel 3 XL using Tapatalk