High/Low Level Adapter - How to Add a Sub to an OEM Head Unit???

[BokCh0y]

School me on line level outputs and how to add a sub to an OEM factory deck please.

My understanding is I would need something like a high/low adapter with trigger - the trigger as the remote for the amp, so something like this:

https://www.amazon.ca/Rockford-Fosga.../dp/B009VTDVMU

So I would wire up say the rear R/L speakers from the OEM deck to that adapter and then the remote trigger to the amp remote correct? Then I can then connect RCA's to the amp to utilize a subwoofer correct?

Question is this: so what if I want to use the rear speakers too rather than have them converted to RCA's for an amp and sub? So how would I then wire this up so I have the fronts, rears + sub?

Thanks in advance guys.

[JfuckinC]

I got an REQ I could sell ya, you just splice into rear speaker wires, steal a signal and run the rest of the stuff to amp/subs.

[dj_rice]

https://www.amazon.ca/SCOSCHE-LOC2SL...74127649&psc=1

[JfuckinC]

That’s way smaller cheaper and straight forward though go with that haha

[BokCh0y]

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https://www.amazon.ca/SCOSCHE-LOC2SL...74127649&psc=1

Sweet thank you.

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I got an REQ I could sell ya, you just splice into rear speaker wires, steal a signal and run the rest of the stuff to amp/subs.

So with any of the those line adapters you just splice into it is all? That's how it's done? Thanks btw.

[pheoxs]

Why not just get a amp with high level inputs and avoid all of that?