I am wiring a fake alarm light on my 05 Ram and need to find a fuse that has power when the car is not running but has no power once I turn on the truck. I cant find one. Anyone know which fuse I need to use?

 

Hi, you may want to use a external relay to feed your light from a continuos source, then it will be disconected when the relay coil is energized from the accesories fuse, which will be on with the ignition. Make sense?

 

So I wire the light to a continuous fuse then wire n a relay between fuse and the light?

 

What type of relay should I use?

 

You'll want to use a switched power lead and a relay which is closed when un-powered. That leg of the relay will be connected to a constant-hot. There is a switched power lead under the steering wheel (lime green/black stripe). There may be a constant-hot in that same bundle, I forget.