Just took the wife's 2007 Cadillac CTS back to Best Buys installers; not switching to night mode. The wife says use to switch to night, but I'm not sure. It definitely doesn't switch now (it is set to Auto).
The installer says there's no illumination wire in the harness, says the head unit won't use the wire, it uses the GPS location/time. I think he's feeding me a line of BS. Seen several posts about connecting to the parking break or ashtray light.
So what's the deal? Is he right?, no wire in the harness means the problem in with the unit's GPS not dimming, OR is HE just dim?
Thanks!
