Help – Kicker Hideaway / Dashboard

Looking for some input on this one. Last couple of days I installed a Kicker Hideaway. Config is that for ground we tapped in the back, remote we used the wire in the groumet by the spare tire, power went to the battery and speakers I tapped the rear speaker wires.

Now I have a weird issue…. Twice after I left the car sit for a period of time, when I was backing out of the garage I got a brightness alert on the dashboard. Last night I just discarded it thinking when we did the install I…