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well u run a power wire atleast 4 guage from the positive terminal on the battery, then 4 guage to a chasis ground source, then a remote wire to the rear of your cd player that will kick the amp on when the cd player turns on... then for subwoofer wiring go to www.the12volt.com for sub wiring options... you need either single voice coil 4 ohm subs or 2 ohm dual voice coil subs to get the 2 ohm load to the amp so u can get the rated power out of it...
You need to use 4 guage or larger wiring with this amp. Also you need to make sure the power wire and ground wire are the same guage.(thickness)
The ground wire needs to be as short as possible from the amp to the metal of the car.
Make sure you are using a 14 guage or larger speaker wire form the amp to the speakers.
You should go with a 4 guage power wire kit. If your amp is going in and out
at high volume than that is your problem. 8 guage will work but, if you want
the proper current which is your power from your battery, going to your amp
than I would recomend the 4 guage amp install kit or just the main power
wire coming from your battery. If you would like contact me and I will send you
to a very good sight with all the info you will ever need for car amplifire installation.
your w7 13's are dual 1.5 Ohm, but according to JL website, are 2.41 Ohms when the coils are in series. Each 13 connceted to each amp with voice coils in series is your best bet. The amps are designed to put out the same amount of power from 1.5 to 4 Ohms. If you parallel the voice coils, you end up with .6 Ohms and the amp will go into protect mode. You'll be drawing a lot of current, so you may want to think about 1/0 guage power wire, upgrade the wire from the alternator to battery (usually only 8 guage) and think about multiple batteries.