Question about Cobra 29 WX NW ST 40-Channels Base CB Radio

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Wiring directions how to wire a plug

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Re: wiring directions - Cobra 29 WX NW ST 40-Channels Base CB Radio CB Radios

Red is positive. Black is negative.

Posted on Nov 14, 2007

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Mic wireing washington

1 audio, 3 receive, 4 shield, 5 transmit (2 MAY have to be jumped with 4) Audio wire is wrapped with the shield wire, so that eliminates 2 of the 4 wires. put 1 of the 2 remaining wires on pin 5 and plug it in ..... if it starts receiving, you can put the remaining wire on 3........ IF IT KEYS UP WHEN PLUGGED IN..... switch the wire with the other remaining one :-)

Aug 17, 2014 | CB Radios

1 Answer

Wiring diagram 4 a pigtail on a mercury sable

I would wire it to my tail lights and directionals.after you have it temporary wired make sure that the lights do what you want them to do them perminantally secure the pigtail .make sure you use heat shrink connectors

May 25, 2014 | CB Radios

1 Answer

I have a galaxy dx 44 hp was working fine then i moved it to a different truck now getting a lot of background nosie

is it wired direct to fuse box or is it to a lighter plug? the plug will make a lot of ground noise. try different ways until you clear it up. one way is a noise clipper from H +Y

Feb 03, 2013 | Cobra 19 DX IV CB Radio

1 Answer

Got pop noise

Popping sounds are from the the ignition - spark plugs, wires and distributor. Most modern cars have "radio resistor plugs" & "spark plug wires" installed from the factory. If unsure on an older car, check under the hood and inspect the wires & plugs.

Make sure your radio AND antenna system are solidy grounded. Poor grounds can allow all kinds of strange sounds and erratic behavior from the radio.

Also, connect the + & - power leads DIRECTLY to the battery. You can pass the + lead through a dedicated relay that opens when the key is removed if you want, but avoid like the plague connecting the + lead to a terminal in the fuse box and the - lead to an arbitrary grounded point on the body. Direct connections to the battery helps to prevent a way for noise to enter the radio on the power leads.

You may also be hearing the electric fuel pump located in the fuel tank on many newer cars. Solving that sound is very difficult.

Good luck!

Jan 12, 2013 | Galaxy Radios DX- 88HL Base CB Radio

1 Answer

I have a Connex 3300. I do not have original plug (power). however, I do have one that fits. I need confirmation this is the right plug. It is three wires. One black(neg.) and two red (positive). I...

The center wire doesn't do anything. Its the outer wires. You can get a standard CB plug with 2 wires that will work just fine. If that plug fits, I it will work. My concern would be if the pos and neg are the correct sides. It should be, But I wouldn't know unless I looked at it.

DO NOT HOOK the radio up with the power wires backwards. Or you will blow the polarity protection diodes. They are there to blow if the radio is hooked up backwards.

If you look at the plug. There is a side the goes to a point, and the other side is square. The black wire, Ground, should be on the side that goes to a point. If it does, then that plug is standard.

It's fine to use and hook up in the usual way. Do not hook up the center wire. It does nothing in the radio. You can clip it, and put a bit of shrink tube on the end as so it does not have a chance to short on anything.

If you are not sure about hooking this power cord to your connex, just go on ebay, and get a regualr CB power wire. They are cheap. It should only have 2 wires.

Sep 07, 2010 | Connex 3300 240-Channels Base CB Radio

1 Answer

Can I wire the TR-121 directly to a cigarette lighter???

yes, just buy a good plug and make sure that you polarize it right.and that your vehicle has the right system voltage also make sure that you have a fuse inline for the radios pwr cable

May 19, 2010 | Ranger TR-121CP CB Radio

1 Answer

Cobra 29 nite watch hooked power wires up backwards witch diode is blown

there is a diode on the power line that blocks the dc to ground. follow pwr wires down to board. and the first diode on the + pwr is it. this is on all radios. and not just cbs. just put a new diode on the back side of the pwr plug. were the wires solder onto. but even better what we do @ our shop 254.718.4042 is use or make bridge rectifier install inline. and you will never have that problem either direction you plug it in. will work. no more worries about polarity.

Dec 15, 2009 | Cobra 29 LTD CB Radio

1 Answer

I need a wire harness for a Cobra 40X CB or at least a description of how to hard wire.

I'm not sure I understand what you mean by wiring harness. If you are trying to wire it to power, and need the power wire, they are widely available. Its a universal plug for cb radios.

Ebay for around $5 search for CB power wire.

Truck stops usually carry stuff for cbs and they will most likely have one.

If you are talking about wiring the mic..... Just buy a mic for it already wired to the plug.

Dec 05, 2009 | Cobra CB Radios

2 Answers

Looking to install astatic echo board in uniden PC78XL

usally on most radios you will unplug the wire that comes from the number two mic plug. you will hook you sheid witch is the 2 little black wires from the echo board to number one mic plug. then the two wires will go to wire you unplug and the other one will go to number 2 mic plug.

Jul 04, 2009 | Cobra 29 WX NW ST 40-Channels Base CB...

1 Answer

Connecting a Cobra 29LTD to a Pyramid PS-3KX 13.8VDC Power Supply

The wires should just attach to the red and black terminals on the radio, strip some wire unscrew the terminals a little wrap behind, and tighten again. Good luck! Or buy some banana plugs and they will plug right in the front

Dec 18, 2008 | Cobra 29 LTD CB Radio

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