Electrical system reboot while driving - losing faith

[97BlackAckCL]

That Kenwood doesn't block your vents? Looks huge.

It blocks maybe 20%, I'm 6'5" so I have the vents angled up anyway

The Halo9 that I'm selling didn't block the vents at all

 

[bjarratt]

Were you able to find the issue. I'm experiencing the same problems with my 2018 4Runner with 80,000 miles. Replaced battery, alternator and belt, drove it for a week with no issues and two days ago the head unit goes off and on multiple times, followed by all power, then total power fail. Jumped fine, when jumper cables were removed it instantly died.

Yep I did find the issue and it seems to be my terminals. Seems like the aftermarket terminals wouldn't get snug enough and could slowly vibrate loose. Instead of using any sort of thread locker, I got some simple locking washers and tightened everything back down. have not had a issue since and things are working smooth.

Unfortunately I am not sure my issue would be the same as yours as I didn't have to replace any other parts, but still might be something worth checking just to make sure cause I have a feeling they can vibrate loose sometimes.