help needed!

[superman_95]

i have purchased a small light which you mount on your dash which makes it appear like you have an alarm when really you dont. anyways my question is i dont really know where to hook it up, from the back of the light there is 3 wires red black yellow it says red postiv. batt black neg. battery and the yellow to something that is on when the car is off i need to have the light working when i shut off my car.. somebody throw me a bone here...

[Nebraska240sx]

so hook it to the fues box in my opinion, find a hot fues when the car is off, and hook it up.

[IvoryJ30t]

heres an idea. your fuse box should have constant power, and switched power. hook the red to constant positive, ground the black, and get a small relay [spdt]. wire the relay so that the coil of the relay is energized when the car is on. connect constant power through the common terminal to the terminal that is connected when the relay is not powered.

my ascii diagram didnt show up right.

[IvoryJ30t]

if you dont get it tell me your email address and ill email you a schematic.