Two Amps+Two Subs Wiring Help Elemental Designs

[Audio_Raven]

Hello everyone, forgive me for the dumb questions but I am completely new at wiring Subs and thought I'd ask the community for a little guidance on how to properly install two amps and subwoofers I was given by my dad because he didn't like them. Here's the setup and all of the gear I have to connect.
Vehicle : 2003 Toyota Sequoia Limited 4x4 with JBL audio and amp.
Amp #1: Elemental Designs Nine.4
Amp #2: Elemental Designs Nine.2
Subs - Two Elemental Designs subs with boxes
Head Unit - Pyle PLDN83BT.5
Wiring Kit - DS18 Amp kit 4 gauge + Two RCA Y Cables and two Power/Ground distribution blocks

I get that I'll need to run the 4 gauge power from the battery through the firewall, install the distribution blocks to provide power to both amps and for grounding them along with the Remote wire. Where I'm running into issues is these are not Monoblock amps and I only need them to run two subwoofers as I want to keep my stock JBL amp and speakers they work great, just looking to add a little thump to the bass. I'm unsure of which Channels I need to connect the subwoofers to from the amps and how to connect the amps properly to this specific head unit. I've attached photos of the amps and the back of the head unit for reference if any of you audiophiles could help me out you'd be saving me a trip to geek squad. I'll be upgrading the amps and subs eventually but for now this is what I have to work with. Any guidance would be greatly appreciated! Thank you!

Amp Serial
Subs
Amps
Amps 2
Amps 3
Head Unit

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[1aespinoza Premium Member]

Any guidance would be greatly appreciated! Thank you!

First you will need an LOC/epicenter combo to clean up the signal from the OEM system. You will splice the LOC into two full range speakers. Then you use RCA wires from the LOC to the Elemental Designs 2 channel amplifier. You wire each sub to one channel of that amplifier.
There are LOCs that have Signal Sense. That feature will put out a Remote Turn On signal to activate the amplifier.

I'll be upgrading the amps and subs eventually

Elemental Designs is a very good brand, no need to "upgrade" from it. I also have the Nine4 and Nine1 along with 3 12A22 eD subs. Great stuff. I would not part with that gear.

 

[Audio_Raven]

First you will need an LOC/epicenter combo to clean up the signal from the OEM system. You will splice the LOC into two full range speakers. Then you use RCA wires from the LOC to the Elemental Designs 2 channel amplifier. You wire each sub to one channel of that amplifier.
There are LOCs that have Signal Sense. That feature will put out a Remote Turn On signal to activate the amplifier.

Elemental Designs is a very good brand, no need to "upgrade" from it. I also have the Nine4 and Nine1 along with 3 12A22 eD subs. Great stuff. I would not part with that gear.

Perfect, thank you for the information! I'm glad to hear I won't have to replace the amps. I wasn't too sure because Elemental Designs isn't in business anymore and I am a complete novice at this stuff for now. I really appreciate it.