How to install rear speakers

[SneakLerd]

Hello, I own a 2000 Polo. This car does not have factory rear speakers.
The thing I was wondering about is, if I could use the RCA output from my stereo, directly to the speaker. Is it enough to only use RCA for signal and power?

Speakers: https://bilradiospes.no/produkter/bilstereo/hoyttalere/pioneer-ts-g173ci
Stereoplayer manual: https://goo.gl/efKo2F
Rearview of stereoplayer: https://goo.gl/yjAcXT

Would I only need one RCA-cable for each speaker?
Would this cable be sufficient? https://bilradiospes.no/produkter/bilstereo/montering-tilbehor/kabler-og-kabelsett/signalkabler-rca/ren5rca
Thank you in advance!

 

[americanaudiophile]

Thank you for the links.
You cannot use the RCA outputs to drive speakers. You will need to add an amplifier to use them but the headunit already has 4 channels of power so you just need to follow the installation manual page 6.
https://www.pioneerelectronics.com/StaticFiles/Manuals/Car/AVH-P4100DVD_InstallationManual0128.pdf
and connect the green/green-black speaker wire to the rear left speaker and the violet/violet-black speaker wire to the right rear speaker.

 

[SneakLerd]

Thank you for the links.
You cannot use the RCA outputs to drive speakers. You will need to add an amplifier to use them but the headunit already has 4 channels of power so you just need to follow the installation manual page 6.
https://www.pioneerelectronics.com/StaticFiles/Manuals/Car/AVH-P4100DVD_InstallationManual0128.pdf
and connect the green/green-black speaker wire to the rear left speaker and the violet/violet-black speaker wire to the right rear speaker.

So I do not have to use a RCA cable at all, just ordinary copper wire?
How should I connect the wires, using soldering iron?

 

[americanaudiophile]

You don't use RCA connections directly to the speakers in any way.
If you want to solder speaker wire to speaker wire rather than splicing them with tape or a butt splice that is fine. Makes a secure connection.
If you connect the speakers as the manual says you only need speaker wire.
If you connect the RCA outputs to an amp you use a stereo interconnect cable with 2 RCA plugs at each end to do that. No splicing or cutting needed.
You would use speaker wire to connect the speaker to the amp.