Question about Jensen JPA285 Car Audio Amplifier

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New install I was getting ready to install a JPA285 into my car I was wondering if I hook the amp direct to the battery with 08 ga. wire how do I get it to shut off when car is off is that what the remote hookup is for and how do I use that is it to be hooked up to the same power source from the deck so when the deck go'es on and off the amp will too?

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Re: new install

HI Big Bully,

The Blue wire is the remote and it couples with the Blue on the back of the Head Unit. If your head unit does not have a Blue , use the Yellow. This will Turn the amp on and off with the Head unit.

Posted on Nov 05, 2007

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How to hook up my amp?

first what are u trying to push, second, the amp is 150w rms. that mean constant power, and 250 @ 2 ohms, now you have power, gnd=ground, and remote<- that turns the amp on when you turn on the car, power or the + sign is what gets connected to the battery, then the ground/gnd or - sign is what gets screwed to the metal of the car, then there is the remote this wire gets connected to your radio, or to any accessory fuse, i.e. lighter, radio fuse, or if you have an aftermarket radio, then it gets connected to the blue with white stripe wire, that will be the amp turn on wire.
You will need red wire about 17ft, black wire about 1ft, and 15 to 16 ft of remote wire, or you can just by an amp kit, that will be easier.
now that the amp is done, time to do the speakers;
You have + and - on the amp, and your speakers have the same signs as well, just make sure when you wire the speakers + goes to + and - goes to -. if you need more help call me @ 6314330567

Feb 19, 2010 | Car Amplifiers

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Power/ Ground Problem. Im running a 6ga Power wire to the battery (approx 6')with a 40amp fuse. The amp turns on, then about 10 seconds later blows the fuse. The ground is the same ga wire and is grounded...

1. Start by undoing your ground.
2. Use a jumper cable to hook up the ground to the battery ground.
3. Install fuse and test.

If it continues to blow you have an internal amp problem.

If it fails to blow a fuse you have a problem with the chassis ground.

If it is a ground issue you can chase down the various ground straps and clean the connections or you can run another ground cable to the chassis (body) ground to the battery to reestablish the connection.

Feb 10, 2010 | Rockford Fosgate Punch 201S Car Audio...

2 Answers

The fuse in the red wire that connects to the battery blows everytime i connect the negative and positive up 2 my battery. it blows when i dont even have the red chord hooked up 2 the amp. whats the...

Hello super11dt,

Sounds like the power and ground wire are shorting. Check the power wire with a multimeter. Sometimes, the insulation gets rubbed off and it contacts the vehicle metal causing a short. The solution is to pull a new wire and install a grommet or bushing wherever it goes through the firewall.

Actually, the negative (ground) wire should not be run to the battery at all. It should be secured to the metal of the vehicle as close to the amp as you can get, preferably within about 3 feet.

Hope this helps.

May 13, 2009 | Directed Extreme XA-5001 150W x 1 Car Amp...

1 Answer


We'll start with powering the system up. YOu will need to run your power wire from the battery. It must have a fuse just after the battery. Run the negative to the chassis of the vehicle. On the back of the radio, there will be a blue wire labeled remote/antenna. This wire needs to be connected to the amp. This is what turns it on and off when you power up the radio. Next you will need to run the RCA cables from the back of the radio to the amp. Now you are ready to hook up the sub woofers to the output side of the amp.

Mar 27, 2009 | Soundstorm 500.2SL Car Audio Amplifier

2 Answers

Amp problem

its fried, yo!!! you prolly fried the main capacitor, so it may be repairable, but costly. if you fried an ic chip, just forget about it.

Nov 28, 2008 | Jensen JPA285 Car Audio Amplifier

1 Answer

Jensen JPA285 425 Watts 2-Channel Amplifier instalation

Yes, watch out for bad wiring! My father's 73 chevy caprice caught fire because of an amp that was wired in poorly. If you have a multimeter it shouldn't be too hard to find each speaker wire, as the speaker will show up with a certain impedance, Like 4 ohms of 8 ohms. Wiring it in phase is the real trick. For that you can only hope there is some sort of color code that the car came with, and there is a pretty good chance there is. I am assuming you are looking at the chopped radio wiring harness. There might be something like brown with a white stripe, and white with a brown stripe. It could also just be brown, and brown with a white stripe. You get the idea. They should all be wired in the same pattern, If they did not do this, then the some car manufactures just have better standards. I believe you can take a AAA battery and hit the two wires you know to be one speaker, and you should hear a pop from that speaker. I would be careful doing that if the speakers are really old, but it should be safe even then.  
Its amazing what a 15 dollar multimeter can do in everyday electronics. My friend and I built an electric motorcycle, and obviously its very crucial for that, but I have used it for tons of things besides that. Especially old car wiring. 

Nov 18, 2008 | Jensen JPA285 Car Audio Amplifier

1 Answer

Blowing fuses

Are you sure you don't have the positive and negative power wires reversed?

Does the fuse blow without remote voltage applied?

Nov 09, 2008 | Jensen JPA285 Car Audio Amplifier

1 Answer

Jensen 425watt hookup problem

Are you using the right fuse? If so, the amp could easily be fried. Thats what my friends guitar amp did when it fried.

Nov 08, 2008 | Jensen JPA285 Car Audio Amplifier

1 Answer

Need help in installing amp.

depending on the power consumption of the amp u will need to run a 4-12 ga wire to the positive battery terminal. then u need to ground it with a wire connected to a clean ground like a chassis bolt. next u need preamp outputs on ur deck to send audio signals to the amp. lastly u need to hook up a remote wire to the blue wire in ur cd player harness

Jun 20, 2008 | Eclipse EA3422 Car Audio Amplifier

1 Answer


From what did the wire become disconnected (amp, battery, cap...)?

Jun 18, 2008 | Audiofonics ADF-241 Car Audio Amplifier

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