You will also have a pair of White/Blue and Brown/White which is the RHS input and a White/Red Brown/White pair for the LHS input. Although... the stock amp uses a common earth input as you will see, the two Brown/White wires going into the same plug.
To put in another amp, you will need one with 'high level' input. Make sure it can take a common ground type input. If it cannot then just use a "high level to RCA" converter.
If you are putting in an after market headunit like i did, then you will just need to separate the two brown/white wires at both ends. If you do this you will need to test which brown/white wire at the head unit end is paired with which wire at the amp end. They are twisted together at the amp end but not at the headunit end (unless you cut the cloth tape back far enough).
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I need to have more info about how you installed it, did you use rca wires from the radio to the amp.? Make sure the sub setting on radio is turned on. Make sure rca wire are in the input connection and not output, also check you connection from radio that they're in rite place. I really need more info about the map of your wireing
Amps have a high and low input. You can run some speaker wire from your rear speakers to the high input on your amp. It comes with a small white plug with four wires. Use the green for one side, and the grey for the other! So no, you do not!
THIS IS A COPY OF A POST I SUBMITTED TO SOMEONE WHO HAD A SIMULAR QUESTION REGARDING AN ALPINE BRAND RADIO ISTTALLATION. THE PROCESS IS THE SAME NO MATTER WHAT BRAND THE AFTERMARKET RADIO IS.
Go to the store and buy a mounting kit and wiring harness adapter that are for your car. There are alot to choose from and most are universal and come with instructions. You can get these at wal-mart or best buy. The mounting kit is meant to fill in the empty space left by the new aftermarket radio (your alpine). The alpine will have a metal sleeve around it. take this off and put it in the mounting bracket so it is flush. The sleeve will have little triangle shaped tabs on it. Bend these out so the sleeve cant fall out of the bracket or someone will be able to pull out your radio. Remove your stock radio by pulling off the trim around the radio. This is held on by clips, so be careful. There will be a couple of screws holding in the radio. Remove these and pull the radio out. Behind the radio there will be 1 or 2 wiring harnesses plugged into the radio. Unplug these. Then attach the wiring harness adapters you bought. These plug into the stock harness and have wires at the other end that are labeled. Wire the alpine wiring harness into the harness adapters that you plugged into the stock harness. If you want to you can unplug the harness from the alpine and wire it to the harness adapter before plugging it into the stock harness. The wiring diagram should be on the radio. If not the colors are pretty common. RED = SWITCHED PWR LEAD (IGNITION) ORANGE = ILLUMINATION BLACK = GND YELLOW = BATTERY LEAD GREY = FNT SPKR RIGHT(+) GREY/BLACK STRIPE = FNT SPKR RIGHT(-) WHITE = FNT SPKR LEFT (+) WHITE/BLACK STRIPE = FNT SPKR LEFT (-) VIOLET = REAR SPKR RIGHT (+) VIOLET/BLACK STRIPE = REAR SPKR RIGHT (-) GREEN = REAR SPKR LEFT (+) GREEN/BLACK STRIPE = REAR SPKR LEFT (-) BLUE = PWR ANTENNA LEAD BLUE/WHITE STRIPE = REMOTE TURN ON LEAD(FOR SUBWOOFER AMPLIFIER) There may be RCA jack inputs in the back and these are for the subwoofer amp. There will be a large black cable in the back and this is the antenna wire. Plug in the antenna wire from the back of the stock radio here. Yu may or may not need an adapter for this depending on the size difference between the wire and the hole it plugs into. **Please note: if your car has a "premium" sound system that comes stock with an amplifier you will need to attach the power antenna lead from the alpine to the remote turn on lead on the harness adapter. If not when you turn on the radio/cd it will not turn on the stock amplifier and the speakers will not work. I found this out with my 99 dodge avenger which has an Infinity stock radio. You can pop the trunk and look up at the back dash and see the small amplifier. Once the radio is wired and the mounting bracket is installed, connect the harness adapter as well as the antenna wire. The new wiring harness adapter makes the wiring a little longer so you may have to stuff them back a little bit. Connect the harness from the alpine back into the back of the radio and slide the head unit into the metal sleeve until you hear a click. Before sucuring the mounting bracket and putting the trim back on it is a good idae to try the radio out so if there is something wrong you dont have to disassemble it again. When you buy the harness and bracket it will say on the packaging "nissan 84-94" or "Honda 83-99" or something similar. Look on the back for a complete list of compatable models
chev stock radio does not have extra plug in for sub. to run your sub, im assumed you also going to run an amp to it also. there are no addition plug in in the back, but that does not stop anyone if you know how to rig things. i would not recommend rig wires on your 2007. I would install a new radio before rigging that car; than add a sub. keep in mind most of GM radios come with stock amp built into the radio itself. If you cut the wires from the radio and wire it to your sub amp you will get nothing but distorted sound. anything sound goes to any amp need to be pre-amp in order to work properly. hope that help some