Connecting remote wire for powered sub?

[droopdog7]

When I installed my after market HU (using a PAC harness), the directions had me connecting 4 blue and blue/white wires together (see image below). The 2 blue wires appear to relate to the antenna and the two blue/white wires to the amp turn on. So now that I want to install the sub, I have ZERO idea how to make the remote on connection. I figure there are about four possibilities:

-tie the blue wire from the powered sub to this entire bundle (so five wires together)
-tie the blue wire from the powered sub to the blue/white from the Sony HU
-tie the blue wire from the powered sub to the blue/white from the PAC
-tie the blue wire from the powered sub both blue/whites (from the PAC and the Sony HU)

In all cases, I imagine the remaining wires would be bundled together. Does anyone have any idea how this is supposed to work? Thanks.

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[huberoy123 10+ year member]

1st recommendation: tie the blue wire from the powered sub to the blue/white from the PAC.
2nd recommendation: tie the blue wire from the powered sub to the remote blue/white from the Sony HU

 

[YourNameHere 10+ year member]

just tap into the fuse panel

 

[AnthonyO 10+ year member]

Does the Sony XAV also have a power antennae output, BLUE wire? If so use that with the metra 40 and the PAC power antennae instead of the remote turn on

 

[AnthonyO 10+ year member]

Then you can use the blue/white remote wire for the PAC amp turn on and your other amp.

 

[droopdog7]

Does the Sony XAV also have a power antennae output, BLUE wire? If so use that with the metra 40 and the PAC power antennae instead of the remote turn on

I’m not 100% sure but the diagram did not show a blue wire from Sony. So probably did not have one.

So what does that mean for me again?

 

[droopdog7]

1st recommendation: tie the blue wire from the powered sub to the blue/white from the PAC.
2nd recommendation: tie the blue wire from the powered sub to the remote blue/white from the Sony HU

In both cases the remaining three wires stay together? FYI, my head unit has a blue white but no blue wire. And, I do have a factory amp if that matter.

 

[huberoy123 10+ year member]

Maybe simpler to follow the suggestion of using another source for your sub remote wire. As JRsmoothee suggested, tap into the fuse panel and use a fuse controlled by the ignition switch. Or you can tap the power wire coming from the ignition switch and going to the radio. A wiring diagram should help.
Did you try the power antenna wire? Youtube.com install videos can also be helpful.

 

[droopdog7]

Maybe simpler to follow the suggestion of using another source for your sub remote wire. As JRsmoothee suggested, tap into the fuse panel and use a fuse controlled by the ignition switch. Or you can tap the power wire coming from the ignition switch and going to the radio. A wiring diagram should help.
Did you try the power antenna wire? Youtube.com install videos can also be helpful.

Thanks. Haven’t tried anything yet. I’m a novice so trying to understand as much as possible before starting. Looked up the fuse box option and looks like I would need a piggy back adapter, which maybe I can grab from an auto part store. The only thing the videos I saw didn’t show is what amp fuse I should be using. And since a wire would now be coming out of the fuse box, I guess I would need to find a way to close the panel.

 

[AnthonyO 10+ year member]

They (Crutchfield) showed the same thing for my Alpine. To use my amp turn on remote for my power antennae. But I used the power antennae out on my head-unit instead. Not sure why Crutchfield does that.

If you wanna follow their instructions you can always use a relay, 4 pin or 5 pin, and power multiple amps.

 

[AnthonyO 10+ year member]

Can you take a pic of your head-units wiring harness and post it here?

 

[droopdog7]

Can you take a pic of your head-units wiring harness and post it here?

Thanks. This is the PAC unit I used just in case:

https://pdf.crutchfieldonline.com/ImageBank/v20201202090700/Manuals/541/541RP4TY11.PDF

The pic of sony harness is below:

 

[droopdog7]

They (Crutchfield) showed the same thing for my Alpine. To use my amp turn on remote for my power antennae. But I used the power antennae out on my head-unit instead. Not sure why Crutchfield does that.

If you wanna follow their instructions you can always use a relay, 4 pin or 5 pin, and power multiple amps.

Thanks. You lost me after the first sentence =P

 

[huberoy123 10+ year member]

Seems that your second recommendation would save you a lot of guesswork.

2nd recommendation: tie the blue wire from the powered sub to the remote blue/white from the Sony HU.

 

[AnthonyO 10+ year member]

Thanks. This is the PAC unit I used just in case:

https://pdf.crutchfieldonline.com/ImageBank/v20201202090700/Manuals/541/541RP4TY11.PDF

The pic of sony harness is below:
View attachment 25944

Wow, no power antennae on this unit. Just the remote out. I would use a 4 pin relay. This will allow you to connect multiple amps and power antennae to one remote