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Anyone know how many amps you can draw from radio harness


davekra

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I'm replacing the stock stereo in my '11 Outback with a carputer.

I've got to measure the draw but it's running on the bench with a 4amp supply.

 

Anyone know how much you can draw from the factory harness?

 

Thanks,

davidk

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There are two power wires, each on its own fuse. In 2010 and later:

 

Pin 3, +12V Accessory (switched), is on fuse #24 under the dash. 15 Amps.

 

Pin 20, +12V Battery (constant), is on fuse #6 in the engine compartment. 25 Amps. This fuse also powers the harman/kardon amplifier (in vehicles that have that).

 

I don't think these two fuses supply power to any other circuits.

 

You may want to use pin 20 for your main power. The pin 3 wire in the radio harness is smaller -- only 20 gauge.

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Great! Thanks for that info!

 

I got home today and measured the draw of my system at 3.9amps.

Looks like no sweat to use the factory harness. I had looked at the firewall and didn't see an easy way in so this is indeed good news.

 

Just need to paint the bezel this weekend and I can install everything.

Thanks again,

davidk

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