Question about Two-Way Radios

4 Answers

Motorola spectra i am trying to wire up a motorola spectra mobile radio i know red is power and black is ground than comeing off of the control head you have a green and orange wire are them ground or power.

Posted by on

4 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers
Re: motorola spectra

They are NOT for the speaker. Speaker wire is black "zip cord" with plastic connector coming off of control head connector. The Green and Orange are Ignition sense wires. How they are wired determines the power state of the radio, i.e. if to BATT radio will be on unless shut off, if to IGN radio will power up when ignition turned on.

Posted on Apr 20, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 589 Answers
Re: motorola spectra - Two-Way Radios

Those should be for the speaker.

Posted on Jan 19, 2008

Re: motorola spectra

Green and orange go to igniton

Posted on Apr 16, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer
Re: motorola spectra

Orange and green shuold be powered to a hot to turn on the remote

Posted on Feb 12, 2008

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

2 Answers


Try looking on, Personally, I have repaired and program these radios and I have no Idea what you mean by APC. Would you be so kind as to explain what you mean by APC?

Jul 29, 2014 | Motorola Astro Spectra 800mhz Mobile...

1 Answer

Do i need a plain green wire?

A gren wire usually means that you are connecting a GROUND wire of some sort. Usually it has a yellow stripe on it these days.

Any wire can be used for anything, the colour doesn'prevent it from working. However wire guage does. Make sure the wire that you do use is the appropriate size. Also, AC power wiring follows certain conventions: Green is ground, White is neutral, RED and Black are hots. DC wiring colour codes are RED is positive, BLACK is Negative.

Beyond that, anything goes, pretty much.

May 28, 2014 | Two-Way Radios

1 Answer

Motorola spectra ta9fw+078w will not transmit

There are a variety of reasons for your Spectra to fail to transmit. A few items to check would be:
1) Power to the radio. If enough power is not present, transmit is the first thing to usually fail.
2) Check your hand mic. This is a common failure part on a mobile radio.
3) Check your antenna and connections. Coax ages over time, and is not forgiving of creases or bends. Also, if your antenna stinger has become loose over time, it will effect your transmit.

Beyond the above mentioned items, most anything further would require repair of the component board of the radio.

Best regards.

Mar 04, 2012 | Two-Way Radios

1 Answer

Xtl head shows "maintenance mode" "remote device" is it not programmed? Also is control head wiring red 12 volt and yellow ign.?


The red wire on the remote head should go to the battery (with a fuse inline) the yellow wire should go to a switched 12 volt source (with a fuse).
The XTL radio is in need of correct programing, With out looking at the codeplug I would say that the option for remote head was not checked.

Hope this helps, Bill

Aug 22, 2009 | Motorola Two-Way Radios

1 Answer

MAXAR D34TCA3000DK... what is the power connector pin connection

You have a 25 watt UHF mobile the top two pins are 12 volt in pop off the cover you can see where the red and black wire go. I should have some of those power cables if you need one

Aug 01, 2009 | Motorola Two-Way Radios

1 Answer

Power cord ?

What kind of radio is it? Looks like a Marine Band radio. Do you still have the owner's manual, as it will show the purpose for each wire. If you don't, write or email the manufacturer to get one. Most Amateur and Commercial gear simply has a red and black wire to get DC power to the radio. Sorry I couldn't answer your question better, but I've never come in contact with a four wire radio.

Jul 24, 2009 | Uniden MC1010 (54 Channels) 2-Way Radio

1 Answer

Having trouble getting sound on my motorola mcs 2000 uhf radio

What kind Motorola radio is it? and I assumed that you mean main unit and control head. If you don't see an internal speaker in the control head then you need a external speaker hooks up to the back of it.


Mar 14, 2009 | Two-Way Radios

1 Answer

2-way radio causing voltage to spike

Hi and welcome to FixYa,

Your described problem indicates that the RF from the Motorola is being received by the electronic regulator of the alternator and is erroneously factored in as sensor/triggers. Simply stated, the RF causes the regulator transistor to conduct more allowing higher voltage output. There could possibly be two ways of addressing the issue: regulator/alternator side and/or the Motorola side. Things that you could try:
  • shunt a reverse protection diode across the output of the alternator to the ground;
  • install filter condensers on all the wires leading to and from the alternator;
  • wire a ground strap (not a ground wire) from the firetruck's - terminal of the battery to the alternator housing;
  • check/improve (lower down) the SWR of the antenna;
  • if you are using a magnetically mounted antenna, replace with a gutter mount or similar mounting brackets;
  • wire a ground strap (not a ground wire) from the antenna mount to the radio to the body of the firetruck to the alternator to the - terminal of the battery.
A ground strap is a flattened braided electrical wire unlike the common stranded auto electrical wire.

Pls post back results. Good luck and thank you for using FixYa.

Jan 26, 2009 | Motorola Two-Way Radios

1 Answer

I have no manual

look at the date stamp on the battery label. if it reads as 711. it is 2007 week 11. they are not made to last more than 18 months in normal industrial use

Nov 26, 2008 | Motorola Two-Way Radios

Not finding what you are looking for?
Two-Way Radios Logo

Related Topics:

607 people viewed this question

Ask a Question

Usually answered in minutes!

Top Two-Way Radios Experts


Level 3 Expert

1640 Answers


Level 3 Expert

3018 Answers


Level 3 Expert

3287 Answers

Are you a Two-Way Radio Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides