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Re: xplod to a jvc
I would recommend using an 8 AWG minimum or preferably 4 AWG power and ground cable. Use as short a ground lead as possible and connect it directly to some chassis metal (avoid accidentally screwing into the gas tank if in trunk). Use a fuse holder with a 40 - 60 amp fuse under the hood within 18 inches of the battery. Your RCA cable coming from the back of the JVC radio should be run to your amp along with the remote turn on lead. This wire should connect to the JVC's amplifier turn on lead which should be a blue wire with a white stripe.
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Depending on the amp, you may have a bad ground on the rca's. The best way to determine if you have a bad rca ground it to run a wire from ground to the outside ground of the rca. If it stops pulsing, you have a bad rca ground in either the amp or the head unit (radio).
To wire correctly, I have the same xplod amp in my car.
Phono leads connect to the output terminals on the back of your head unit, Then connect to the input terminals on your amp.
The remote wire connects to the amp remote wire behind your head unit (if don't have a wire labeled amp behind the head unit then it usually a blue and white wire).
The power lead from your battery connects to the 12v or PWR terminal on your amp.
Then the Ground wire connects to a rust, dust and paint free area on your car (bolted down), Try behind your rear seats and find a bolt already there. This wire then connects to the GRND terminal on your amp.
The remote wire DOES need to be connected to the head unit. You can see if thats the problem simply by touching the remote wire to the power wire. The unit should come on. The head unit should either have a remote lead, or a power antenna lead, and thats what you need to turn the amp on and off. BE SURE your ground is solid, and its usually best to take that to the battery as well to prevent unwanted engine noise. Hope this helps!
Connect a DC voltmeter between the "remote" (+) terminal and the "ground" (-) terminal on the amp. When you turn on your Pioneer, you should read 12-14V. If you get voltage for a second and then it goes away, either the incorrect wire from the head unit is connected, or the head unit remote turn-on is defective. If the voltage remains on the terminal and the amp immediately turns back off, it's possible that the remote turn-on is not supplying adequate current for the amp. To determine if that is the case, run a separate wire from a positive (+) accessory terminal (cigarette lighter or fuse box) to the amp remote terminal. If the amp then turns on and stays on, you'll need to wire a relay into the turn-on wire. The wiring for such a relay is shown here. Most any 12V SPST or SPDT relay from an auto parts store or Radio Shack will work OK.
First off, if you're using RCA preamp connections from the head unit to the amp, you don't need to put anything into the high level input connector. But if your head unit doesn't have RCA preamp outputs, then connect the front left to the white (+) and white/black stripped (-) wires and the front right to the grey (+) and grey/black stripped (-) wires. There is no need to connect the rear speaker outputs of the head unit to the high level input of the amp.
You have 3 power connection, +12v goes directly to your vechile's battery (make sure this is fused) REM connects to your head unit which tells the amp when to turn on and off (usually very thin wire, comnpared to the gnd and +12) Te gnd you already know where it goes.
Then connect your sub to + and - speaker out put. If you run this bridged it will increase your output, must be 2 channel to bridge to 1 channel or a 4 channel bridged to 2 channels.
Hope this helps.