I have a strange problem with the Z now that it gets cold at night. It only happened sporadically a couple months ago, but now it is every morning.

When I start the car, The dash lights and center gauge lights as well as the radio will not come on. After 5-10 minutes of driving, however, it all comes on at once.

At first I thought it was a loose ground somewhere that rattles around, but now I figured out that if I let the car sit and warm up for 10-15 minutes, I will get in and everything is working fine.

Any ideas?