So far, I've done an Amp/Sub addition, with full speaker swaps with Digital Design Components throughout and sound deadener in the trunk/rear shelf area.
This time we went with interior lighting.
He wanted trunk accent lighting and feet floor well lighting.
Trunk was easy enough, as the rear OEM light was simply replaced with a 2' strip of Blue lights.
The front was a bit trickier, but nothing out of the ordinary.
single 12" strips were hidden up underneath (out of sight) the foot well area, and trigged by an ACC powered switch near other OEM switches on this dash.
After all was said and done, I popped in a few Dome Light Circuit boards and the entire car lit up Bright Blue! Perfect accents to his OEM blue dash lights.