Creating a new fuse kinda

Hello,

Yes it would work as long as on the other side of the fuse you hook it up to a switched power supply. If you run a hot wire from the battery and connect it to the other side, there will be constant battery power to it even when the vehicle is turned off. Hook one side to a switched power supply and the other side to what you are powering.

Thanks,
Alex
2CarPros

Be sure the position you want to use has switched power by using a simple test light with the key off and then on. Like Alex said, if you connect it to one which isn't switched you could create a battery drain.
Look close at the fuse box, sometimes those open spots are for other options, however there are also vehicles that have open spots in the fuse box because they are used to enable or disable items during programming or testing while the vehicle is being built and if you turn that on by accident you could create a problem.
There are also fuse taps that can be used with a known fused circuit, basically you remove the fuse, insert the tap and then the fuse you removed and you now have a power lead you can install a fuse in. They look like the picture.