Fuse Location/Number for Stock Subwoofer

[FerrisFlash]

Good afternoon from Texas!

I am in the process of upgrading the stock (functional) amp and sub of my 2023 Bronco Black Diamond 4 door. I had to reconnect the battery to go to the parts store and left the 12v, 12gauge wire (yellow wire with red stripe) that powers the amplifier stripped and loose (I know, I know)

When tidying up the rear cargo area I let the hot 12v hit a ground point and yes it sparked. Before I assumed the fuse was blown, I checked with my multimeter and yes the wire has 0 volts.

I have been searching for the fuse that runs to this subwoofer power wire, and pulling them but cannot find a blown fuse. I've searched online and it seems like this should be a 20 amp. Both Fuse box diagrams do not label a "sub power" module - where should I be looking?

EDIT: All 6 existing speakers seem to still function as before. SUB signal wires read 2-5mv when music plays

EDIT 2: I plan to run the Kicker Key 500.1 amp on a 4 ohm sub so I'm expecting 150w RMS - the 12g stock wire should be enough I think.

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[RagnarKon]

Manual has it listed as the "Amplifier".

Fuse 146 I want to say?? But that's just off the top of my head, don't have the manual in front of me right now.

 

[Brian_B]

Its under the hood, not under the dash. It is indeed 146

Also, a @StickerFab plug
https://www.stickerfab.com/products...Jek5dUxU9TfJZhBSSrrQOEDZgIczNp1WgSbxQ83EqRRQ#

I wouldn't run a 500W amp off a #12. That 150W you are looking at is RMS, not peak draw. The manual for the Kicker specifies a 60A fuse and at least #8 wire.

https://www.kicker.com/app/manuals/47KEY5001.pdf
Page 7

Given that it's all the way in the back of the Bronco, I'd say #6 at least, and if it were me, I would run #4. Or, drop the fuse size down to 20A like the factory sub does and hope you don't pop it. And you may never pop it and scream "I told you so!" every time you listen to it.

 

[Fasteddy]

Handy cheat sheet I made up...

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