Head unit current draw

[TurboTBird]

Hey, I'm installing a Clarion head unit in my car it's specs are 53Wx4 or 19Wrms x 4 .

I'm wondering what kind of current it will need when turned up to full volume.

To power the deck there is a 14g yellow wire with a 15amp fuse that needs to go to a battery supply and the red 18g wire that goes to the switched ACC voltage. My cars wireing harness works in reverse. The switched 12V is available from a 14g 20amp circuit and the constant 12V from the battery is only available from an 18g 5A circuit in my car.

I suppose the yellow wire for my deck carries the current to supply the deck? Does this mean I need to run a 14g wire to my battery + terminal? That battery terminal will have 14V on it when the car is running, is that gonna be a problem or can I get a little more volume out of my deck simalar to an unregulated amp?

Thanks

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[smoka 10+ year member]

If you have a 15A fuse at your deck, then you can assume the most it will use is around 12A max (fuses are usually rated for 20% over max load).

You need to find a constant 12v that is fused at 15A or higher. You might need to run your own cable if you can't find something better.

 

[DidUHearThat? 10+ year member]

Run new power. 10 ga wire.