Guages dieing help

[2000-F-350-SUPERDUTY]

I have a 06 6.0 S&B CAI, 4'' exhaust, CTS, and an SCT tuner programmed to street mode. It drives normal and has plenty of power but if I floor it and keep it held down the battery light comes on and in another second the gauges die until I let off. I havent had a chance to try other tunes but Im guessin they are the same way. Im sure its something with the SCT but what is the weak point making it do this?
Thanks
Phillip

[colo_dually]

I doubt its the tune, but return the truck to stock and see if that corrects the issue.

You may have a more serious electrical issue going on.

When you get any of these issues running tunes, the first step is to return to stock and recreate the problem.