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Discussion Starter #1 (Edited)
ok, so I spent 2 days working on this project. I upgraded my audio system, but did a factory intergration. I really like the 6 disc on the dash. So I bought....
2 metra harnesses, one for radio, and one for car harness
2 9 connector speed wires
4 6.5 infinity reference 2-way speakers
1 5-channel boston accustics amplifier
32 posi-twist
8 posi-tap for speakers
1 kicker power & ground kit
1 kicker 220W 8" subwoofer with box
8 speaker harnesses

Id do pictures, but im running out of space to do them. Battery was disconnected for all this. I connected the two harnesses wires together for the headunits 12v constant, switched lead, dimmer, illumination, and made my own ground. Now that leaves 16 wires left. I took the headunits harness and connected the 8 speaker wires to a 9 connector speed wire with posi twists, connected the switched lead also to the remote turn on wire (9th wire), and then ran those 9 wires along the passenger side to the trunk for my amp. Then it was connected to my amps speaker wire input slot. Then I ran another 9 connecter speed wire from the amps speaker output to the headunit area, only using 8 wires. Now I connected those 8 wires coming from the amp to the cars harness using the posi twists. Now all wires at headunit are used. Plug in the harnesses, and ur set. Now when I installed the speakers in the door, instead of cutting off the factory plug, cause they do not make a speaker harness for the versa. So I bought cheap speaker harnesses for another car. I cut the plug off of the Speaker harness, and placed the posi tap there. Now I connected my aftermarket speakers, and connected the posi taps to the correct positive and negitive factory wires, with connector still attached. I payed the guy down the street $20 to route my power wire through the firewall, routed that up the drivers side and to my trunk. I made a my own ground for the amp in the trunk. There is a metal brace behind the seats, so I made a hole there to screw the ground cable down to. Connected the amps power wire. All wiring is under trim pannels on each side of car. I used a staple gun to staple the carpet back together. U seen no wiring at all, except in trunk, but that can be worked on later, lol. Then I bought a piece of wood from lowe's, and screwed it down between the brace and the top part of the trunk. So then I screwed down the amp on the board. So now it is up and out of the way, and my trunk is still usable. Thats why I bought the sedan, lol. So you could say I made a clean and plug and play install. It sounds great, and im really happy!!! Here is a picture of the final result in my trunk, maybe people can use my idea for their sedans. Tell me how I did, and if you like it!! Thanks for reading.






The adapters that I used to tap into the factory wiring
 

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$20 to get a power wire through the firewall? You could've done it yourself, it's so easy. Doesn't sound so PNP with all the hacking of wires and harnesses. But in the end, the hard work pays off with a great sounding system. That amp is bigger than I thought! Great job!
 

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Discussion Starter #3
It really wasnt that hard, I had the metra color wiring sheet, sclayton325 helped me out with his how to install a system in your car. I just wanted to be able to disconnect the harnesses and speakers very easily if I wanted to take them out down the road. Pictures would be alot better, but Im running out of memory on this site, and it takes forever to load, lol.
 

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You should look into getting either an Audiocontrol LC2i for your sub or an LC7i and power your speakers as well as your sub. Great products for factory integration
 
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