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Cant remember security code

I recently disconnected my truck battery and when I reconnected it, the words "enter code" was flashing on the head unit. I tried every four digit series of numbers I could possibly think of but none of them worked. What do I do since I can't remember my security code?

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  • Foxtr0t May 11, 2010

    Have you checked the manual incase there is a default code?
    What type of head unit to you have?

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  • Master
  • 1,596 Answers

Turn the radio on standby the code should be all zeros you can switch the numbers by the controll knob by pushing the knob up and over once thats done hold the knob in you should be good

Posted on Jan 29, 2009

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1 Answer

Was clearing code on my truck and disconnected power from battery to clear codes .... now amp won't turn on.....fguse is ok


If the head unit works still. Check fuse at battery console. May be fused twice. Once on amp one up front.

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My amp wont shut off when i turn off the car and take the keys out. just want to know how to turn off the amp. im out of town and cant go to the place i had everything installed at, for another week. just...


Hi, can you disconnect the wire from the "rem" terminal of the amp? The wire connected here is supposed to come from the head unit and is hot only when the head unit is turned on. It should be a blue wire.

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I have 2 amps instalkled in my car one is sony 1200w 2 channel amp for speakers and one is solid audio f2500d for 3 subs my sound and every thing was good but suddenly from yesterday im having trouble when...


First disconnect the CD head unit from the sub amp and see if the other amp works. If yes, the problem is the wires to the amp, the amp itself, or the subs/sub wiring. If no, the problem is the head unit--probably an internal short.
If the other amp works with the sub amp disconnected, reconnect the sub amp to the head unit, but disconnect the sub wires from the amp. Try the CD player. If the amp goes to protect with no speaker wires attached, the amp is bad. If the amp is OK, the problem is the subs or sub wires. Hook the wires up to the amp again, but disconnect them from the speakers. Try the player again. If the amp goes to protect, the problem is the amp wiring. If not, the problem is the subs. Check the impedance of each sub using an ohmmeter to determine which amp is out of spec.
Please let me know if you have questions, and thanks for using Fixya.

Jun 11, 2011 | Solid Audio F2500D 1-Channel Amplifier Car...

1 Answer

How do I wire the system


You would require an amplifier wiring kit which will contain all the wires to get power and signal to your amplifier; six feet of 14-gauge speaker wire for the subwoofers. Your speakers should have come with their own speaker wires.

The amp connects to your head unit via an RCA cable and often a "remote on" wire, and also connects directly to your car battery through a fused "hot" wire and to the car's chassis with a short ground wire.


The complete installation process is as follows

#1

Disconnect the ground (negative) cable from your battery first and foremost. NEVER work on the electrical system of your car with this connected.

#2

Install your new speakers. Start by removing the paneling of the speaker enclosure. Unscrew and disconnect the old speaker.

Ideally the speaker wire will be connected to the old speakers with a metal clip that can then slide right on to your new ones. If not, cut the wire off the old speakers, strip about half an inch of it, then cut the last 6 inches or so off the speaker wire that came with your speakers so you have the proper connectors with a little wire attached, strip a half inch of those wires and twist connect them to the existing speaker wire. Bend the twists so they are in-line with the wire and wrap each connection in electrical tape so no wire is showing to protect them.

Attach the connectors to your new speaker. Make sure to connect the negative wire (-/black) to the negative terminal on the speaker and the positive wire (+/red or white) to the positive one. Screw the speaker in place. If you have component speakers, and therefore a crossover, make sure the crossover is secured in the speaker compartment so that it does not bounce around while you drive.

Wait to put the speaker enclosures back together until you have installed the head unit.

#3

Follow the instructions you got for removing whatever part of the dash covers it and take out your existing head unit. Connect the car stereo wire harness to the connector that was attached to your old radio and attach the other end to your new one. Connect the antenna cable (the single wire with the big plug at the end) to your new head unit as well.

If the speaker wires are separate from the harness connect them using the method of stripping, twisting, and taping described above. Do this one at a time or use masking tape to label the wire to avoid confusion. If you are having trouble figuring out which wires go to which speaker or which is positive and negative read the tip at the bottom of this section.

Do not put your new head unit into the dash yet-you still need to connect the amplifier to it. Put the speaker enclosures back together now.

#4

Attach the thick positive (+/red) power cable for your amplifier to the connector on positive terminal of your battery. The kit you purchased should have come with an o-ring on one end of the wire (you may have to crimp it on yourself, if so do it on the end with the fuse), this ring can be sandwiched in the bolt on the connector that connects your car to the battery.

#5

Put the fuse in the fuse holder.

#6

Run the power cable through the firewall of your car (there is usually an opening on the drivers side) and along to the back of the car where your amp is. It is usually best to run this wire under the plastic molding that goes along the bottom edge of your car, you never want the power cable to come near any speaker wires. At the same time run the remote on wire (a really thin wire from the amplifier wiring kit), through the dash where the head unit will sit, along with the power cable to the amp.

#7

On the other side of the car run the RCA signal cable through the dash from the head unit to the amp (it's a pair of wires together with connectors on each end).

#8

In the back of the car pick exactly where your amp and subwoofers are going to go. Part of choosing this is that the thick black ground cable (negative) needs to have a place to connect to the metal frame of your car. This should be as short as possible, you never want the ground cable to be longer than 3 feet.

#9

Find a good screw or bolt, take if off and sandpaper the metal surface that the o-ring will make contact with, then screw it down tightly.

#10

Attach the RCA signal cable and the remote on cable to your head unit and attach the power, ground, RCA signal, and remote on wires to your amp.

#11

If you have not already done so, place your subwoofer box in the trunk and attach your amplifier to it if that is what you are doing. If you are not going to screw your amp to the subwoofer box then it must be secured to something else.

#12

Attach the 14-gauge speaker wires to the left and right channels of the amplifier and to the speaker connectors of the subwoofer box.

#13

Mount your head unit into the dash. Double check all of the connections on the back of it to make sure they are secure. Then slide your head unit into its slot in the dash and screw it securely in place. Before you re-attach the dash, reconnect the ground (negative) cable to your car battery and turn the stereo on and move around the car listening to each speaker to make sure everything is working properly. Then put the dash back on. You are all done!


Hope this helps

Thanks

Oct 08, 2010 | Jensen XA2250 Car Audio Amplifier

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I have a jl 500/1 . The distribution block is lit showing 12v plus. no green power light on the amp? I disconnected pwr and ground and reconnected. the green light came on for 10 seconds and shut off. all...


The amplifier will not power on unless/until it recieves the turn-on signal from the head unit.

It seems the issue is with the head unit in this case.

Check the fuses and verify constant and switched power with a multimeter.

Once the Head unit powers on - the amplifier should also.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

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His amp probably blew your fuse. Check that you have 12V at the power connections. If you don't, then find the fuse in your positive wiring to the amp. If you do have 12V to the amp, check your remote power up also has 12V between that and the negative line when your head unit is on. If it doesn't, then it's probably an internal fuse in your remote switch on line inside your head unit caused by a fault in your friends amp. This is normally accessible at the back of the head unit.

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