I've searched the forum and the owner's manual

I'm looking for which fuse to tap in the sjb that will allow my (soon to be installed) subwoofer to continue to operate with the key off the same as the radio. I found it on my '13 but I can't seem to locate it on the '17 i just bought.

the amp remote wire will be tapped to this fuse...if it exists. can't find it anywhere in the manual.

 

well after continuing to search, this may not work anyway. it seems the delay feature may only work if using the radio, and not Bluetooth from my iPhone.

 

bump

 

Can you tap the amp remote wire into the radio power wire? Is the amp main power always hot?

 

theoretically that can be done, however it would require disassembling the dash and pulling the head unit out, i would assume. If there's a fuse/relay like on my '13, just install a add a circuit fuse set up and then it's good to go.

No, it's not always hot, it's switched on or off with the ignition.

the benefit of tapping the delay fuse/relay is that the amp works just like the radio. it will stay on as long as the radio does. after the key is turned off it will continue to operate for a few minutes the same as the radio.

so when my wife goes to the grocery store, i can sit in the truck and listen to music without the key on....and with the amp still working

don't tell her i said that

 

I haven't looked at the fuse block layout for my '17, but maybe an add-a-circuit to the radio fuse in the fuse block? I would like to get wiring schematics for this truck like I have for most of my other vehicles.

 

#33 in the sjb is the radio fuse, however it's a miniature fuse and i don't think they make an add a circuit for that size, plus it's 20 amp. i haven't seen a 20 amp add a circuit fuse tap either

 

Why not look into tapping the harness made for the factory sub? Isn't the connector back there for all trucks regardless if they have the sub or not. i would think one of those could be used for amp turn on.

 

I just added an amp to my 2018 F-150, I tapped into the cigarette lighter for 12v turn on.

 

well this is an interesting idea. i'm unaware that there's a factory connector for an amp. can you give me an idea where it is, looks like and which wire i would tap? this could be just the ticket.

i don't think this will accomplish what i'm trying to do. i have a 12v key on source now. i want the amp/sub to function the same as the radio...i mean a delayed turn off after the key is off.