pureoptic

So I have some LED strips to install underneath the dash on the interior of the car, looking to route it to the fuse box. I've ordered the adapter, but it comes with a 5, 10, 15, and 20 amp adapter. My question is, does anyone know what size voltage the fuse box uses?

bythabay

iTrader: (2)

If I understand your question correctly, you are trying to use the power source at the fuse box and your question is regarding amperage, not voltage. I would recommend using the fuse box signal as only to power a relay cool and draw your 12v signal directly from the battery. Alternatively, if you can reduce the existing amp draw on your circuit by switching to LEDs, you would be able to directly use the power source so long as you don't exceed the amp rating by much.