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Were do i put the remote lead from sub to in the head unit

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If you are referring to a powered subwoofer, the remote lead hooks up to your head unit at the "Amp" or "power antenna output" If you have a factory radio you will need to find an alternate source of power. Make sure it switches on only when your ignition is on.

Posted on Oct 18, 2008

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I can not get a 12vdc signal from the sub remote out wire blue with white stripe on a NESA 749nb, at one point I had power on the wire but when I got itr hooked up the power went away, I need a signal


if the head unit has any fuses go ahead and check those. Recheck all the wiring to make sure nothing was connected where it should't. If you still can't get any power out of the remote wire, there might be an internal issue with the head unit and if it's under warranty, take it back. The only other option is to use the red accessory power wire on the head unit and tap into that but the only thing is that when you turn off your radio, the amp will still stay on and will only turn off when your vehicle is turned off. I would prefer to have the head unit control the amp, so if it's warrantied take it back, but it's completely up to you.

Feb 26, 2012 | Car Audio & Video

1 Answer

Have lanzar 2000 Watt amp...the green light is on and subs work with key turned forward...then once u start the car I get the red protection light? I chained the ground and remote wire...any other...


Chaining may be causing the problem. It sounds like you have the remote turn on lead and the ground lead connected together. They should not be this way. The remote turn on lead should be connected to your head unit's remote turn on lead or a source that is turned on and off by the ignition.

Feb 15, 2012 | Car Audio & Video

2 Answers

I have checked all connections to my amp battery,head unit,remote or trigger wire,fuses,power cable,rca leads,ground wire,amp has a green led light on it indicating if it works ok,red if it`s not,light...


Your amp could be in protection mode! Sometimes turning up to high or wires touching will put in protection mode! It will have to be unplugged for a day or two to drain all power out of the memory. Leave accessorie/ignition wire hooked up, just not power and ground wiring. It should reset itself.

Jan 22, 2010 | Lightning Audio B4.250.2 Car Amp

1 Answer

Why do my subs work when the radios on but when i play a cd the subs dont come on


Hello m_renner67,

Most likely the amp remote terminal was connected to the head unit power antenna lead rather than the amp turn-on lead.

If the head unit does not have a dedicated turn-on lead, you can wire the amp remote terminal to any switched 12V source.

Hope this helps.

Aug 26, 2009 | Alpine Car Audio & Video

1 Answer

Sub cuts out


With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.

If the voltage remains near or above 12v, the sub may be damaged. You'll need to measure the resistanace of the voice coil. It shouldn't read less than ~85% of the rated impedance.

Oct 26, 2008 | Cadence Z8000 Car Audio Amplifier

1 Answer

I have a jvc KD-G320 cd player and i am trying to hook it up to my 2 12" subs n the cd player doesnt seem to b sending the message to the subs to kick is there anything special i have to get to make...


ok first make sure all the leads are good
remote
and rca leads
check power to amp
then go in to settings in the head unit and change from rear to woofer and then do sub contol on high

Aug 16, 2008 | JVC Car Audio & Video

1 Answer

Music not playing from subs


Do this for the sub amp...

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.

Jul 03, 2008 | Kenwood KAC-9152D Car Audio Amplifier

1 Answer

Intstall sub and amp


ok not much info but
u need a red thick wire with a fuse from positive on battery to positive on amp
thick black ground wire from negative on amp to car body
remote wire from remote on amp to remote on back of head unit
rca leads from back of head unit to amp
then hook up sub

Jul 02, 2008 | Car Audio & Video

1 Answer

Only have 1 remote wire for aerial


hello simple ..just put a on/off switch inline with you aerial power lead ..amps will stay on ..if you dont want the aerial up .just flickm the switch off..down it goes

Jan 30, 2008 | Car Audio & Video

1 Answer

Alpine MRP-M650 : Power LED turns on but no sound. All the connections are made. Subs have been tested on another amp.


is the remote lead properly connected to the head unit? if the power led is on then the power cable and earth must be good, check the remote lead 2 your head unit first, if thats all good try looking at the amp to see whether theres a small switch to adjust the output going to the subs, if its very low or right off then nothing will be going through to the subs. if its on high and fine it only realy leaves the neg and pos inputs from the amp 2 the subs.

cheers, adam

Oct 30, 2007 | Alpine MRP-M650 Car Audio Amplifier

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