Did you pull the INT LAMP (Interior Lamp) fuse? If you did that feeds 12v directly into the BCM (Body Control Module).
The interior lights including fade out functions is control by the BCM. Remove the driver's side kickpanel and make sure both connectors on the BCM are secure. The BCM is located to the left under the dash by the emergency brake and it's the bigger of the two modules.
Thrasher CAI, DHP v1.0 PCM, SLP Headers,
3.25 SC pulley, CAIT GMAF, 2.5 DP/Hi-Flow CAT,
u-bend delete, 160 TS, ZZP Stage 1 72mm TB,
TB spacer, MSD 8.5mm wires, Autolite 103,
Goodyear Gatorback Serp. & SC Belt,
Nitto NT555R Drag Radials
1/4 ET: 13.210 sec. @ 104.490 mph
0 - 60 ft: 1.945 sec.
