Theoretically:

Im not an electrician, but couldnt you increase the fuse rating for the under dash lamps and just run extra wires to your front and rear lights?

I have a UNGO Clarion system, so my interior lights no longer come on when I disarm the car.

E0 #4384 of 6535 Born Jan. 9 1998 My SVT from the ashes 147,466 miles, purchased Nov. 2002 @ 76,559 miles