I used to work at a high-end car stereo store. Hopefully you'll see this before you get to work. Depending on the type of subs that you have (most likely 4 ohms) there are a few things you need to take into consideration...
*engine noise resulting from running the wires in a bad position. If you get inexpensive rcas and ground and power wire, you might have this happen.
*The proper size fuse/fuseholder for the amp (the fuse will be mounted near the battery.)
If you are using your stock unit..(factory stereo) you will need what is called a dual amp balnacer. this allows you to properly install the aftermarket amp, subs into your car.
the sub can be mounted a number of different ways..figure out what would be best for you. I suggest that you fire the subs toward the back of the car. don't have the subs facing the interior of the car.
Last, but most important. If you do keep the stock head unit, you will have bass, but your highs and mids won't sound any better. Factory stereos...suck. sorry, but it's true. When I used to build systems for people, I would go deck, speakers, amp, sub. It's still the best way to do things. Just a suggestion.
GET YOUR STUFF FROM A CAR AUDIO SPECIALTY STORE AND DoN"T BE AFRAID TO ASK INSTAll ADVICE. MOST TECHS WILL BE COOL ENOUGH TO HELP YOU OUT, AS LoNG AS YOU BY WIRES,RCAS ETC...FROM THEM.
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