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Need Help Installing Subs in 05 Grand Prix



where do you find one of these 20-30 dollar harnesses? on crutchfield theyre $100 but 50% off if you buy a headunit
 
SlowNA06 said:
I think most people run the power wire through the rubber grommet in the footwell of the front passenger seat. Just pop off the plastics and run it along the other wires there. No need to cut up your carpet.
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0226121418-1.jpg



is this what you are talking about?

06grandprix93 said:
Or instead of wiring through the firewall, you could do what I did. On the passenger side, there is a hole by the door jam that runs all the way up the inside of the fender and then there is another hole right next to the battery. The wire is slightly visible though where the door closes, but its not noticeable unless you are looking for it. Only thing is, this might not work if you're using 0 gauge or something cause the door might not be able to shut
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i saw what you were talking about today and that looks pretty great. if i cant figure out this firewall thing that is deffinetly and option i will look into
 
2dee11 said:
hey guys, i just got a 2005 grand prix today (excited! its my first car, a hand-me-down from my mom) but i was also given a set of two 12" subs from a friend of mine a year or so ago. and im looking to install them in my Grand Prix. it does NOT have the monsoon system or the sterring controls. i was originally going to install and after-market head unit as well but found that the adapter was about $100 extra. so i want to just hook them up (with an amp) to the stock head unit. to do this i know you need to use a Line Output Converter. i also know you need to tap into the rear speaker wires. im not sure on how to do this though. you dont lose your rear spearkers do you? any pictures or videos would be excellent help! also where is a good place to put the power wire through the firewall? thanks in advance for all the help! stupid adapter through everything off. i knew how to set em up with an external head unit
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Hey you can hardwire the radio in with the amp. its a little difficult but i did it in my grand prix. the only downfall you will not have door chimes. if you need the color set up i can send it to you.
 


2dee11 said:
0226121418-1.jpg



is this what you are talking about?
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You got it dude. Just pop the rubber piece out and make the hole a little bigger to squeeze stuff in. Optionally, you can squeeze a little RTV or caulk over the hole when you're done running wires. I didn't bother and don't get any water or dirt or anything through.
 
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