Hi, everyone. I've install the head unit and connect a mono amp for sub, now I have buy the second two channel amp for my speaker, how do I connect the amp and the speaker? do I need to connect another RCA's cable?

 

On your 2ch amp, you probably have an RCA output.
Have a RCA cable that goes from your 2ch to your mono amp.


For your front speakers, you gotta run some wires from the trunk to your front speakers.
. Mine come out of the trunk under the rear seat,
. Then they go under the carpet, under the center center console
. At the end of the center console, they each take one side
. They each go into the rubber piece that is between the frame and the door

 

yea, and if your mono amp righ now does NOT have an RCA output, get a 2 channel amp that does have an RCA output.

here's an idea of how u should wire it if you did not have an output on the mono but do have an output on the 2 chan amp (think of this as a flow chart of the "signal" going through)

Headunit > 2 Chan > Speakers + Mono Amp > Subs

 

thank you Blaze125 and bobaab.