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Old 12-27-2007, 12:28 PM   #1
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CB Radio Install

My wife bought me a CB radio for my 06' Unlimited for Christmas. I suppose she doesn't want to get lost in the middle of nowhere without the ability to call for help. Who can blame the woman... Anyhow, I haven't installed a radio before and was wondering what the best method was. Where did you mount the antenna? I'm thinking the rear bumper. Then how do you get the cable to the radio in the cab? Under the Jeep? Any drilling required? Any recommendations on antennas? Etc

Any and all help would be appreciated.

Late

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Old 12-27-2007, 12:36 PM   #2
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Check the Communication section of this site. There's tons of info there.

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Old 12-27-2007, 05:57 PM   #3
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I'f you're putting it in a TJ there are accessory wires behind the glove box you can wire the power wire to. Run the ground to chassis ground.
We mounted the antennas to the body above the tail lights using half of a standard mirror mount bracket.
We ran the coax through the interior under the carpet, I don't like having coax outside the body anymore than necessary because sunlight and road salts can degrade the shielding.

As for antennas, I like a 4' Firestik but some people don't. Right now I'm running a 102 inch stainless whip but I'm not going out in the woods much these days. If we were heading out I'd probable stick my Firestik back on.
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Old 12-27-2007, 06:22 PM   #4
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For powering your CB, it's important you connect it directly to the battery to minimize possible radio noise. This is Basic Radio Installation 101. Fuse boxes and aux 12 volt wires like the TJ has available above the glove box will be electrically noisier than the battery will be which will provide good clean pure DC power. By electrically noisy, I mean the kind of noise things like the fuel pump and alternator can cause which a CB can pick up in both what you receive and transmit. I'd run a 14 gauge wire from the radio to the battery, making sure the in-line fuse that came with the radio is kept in place. What gives the same effect as connecting to the battery but is an easier connection to make is the 12 volt stud on the battery-side of the Power Distribution Center, on the passenger-side fenderwell. There is a small cover over it that is unsnapped to expose the stud that has a heavy guage wire that connects directly to the battery. Disconnect the battery first and then undo that nut so you can attach the +12 volt lead from the CB to it.

Actually you will have two +12 volt leads coming out of the CB plus the black ground wire, one of the +12 volt leads is meant to to provide unswitched power all the time to the CB which keeps the CB's memory (like the last CB channel you were on) alive. That lead goes to a constantly on power source, like what I described above.

The other +12 volt lead is made to be connected to a switched source of power that shuts off when you turn the ignition off. I would not connect this lead to a switched power source since there will be times you want the CB on but you will not want the ignition turned on or your key in the ignition... like you're on the trail and want to hear the CB while you're outside of the Jeep. I prefer connecting that lead to the same non-switched source of power the other lead goes to so the CB can be turned on at any time.

No worries about the CB draining the battery if you forget to turn if off. That huge battery could power a CB literally for weeks without being drained.

I second the recommendation for a Firestik antenna, they're very rugged and because they don't sway too much like some other antennas do, it's ideal for rough trails. Be sure, if you get a Firestik, to get the "tunable tip" version which just makes it a lot easier to tune due to a brass tuning screw it includes. Personally I'm running a 2' version of that antenna which works fine on the trail, seemingly as good as the 3' it replaced when my Jeep would no longer fit in the garage with a 3' antenna.
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Old 12-28-2007, 07:00 PM   #5
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[QUOTE=Jerry Bransford;175918]
Actually you will have two +12 volt leads coming out of the CB plus the black ground wire, one of the +12 volt leads is meant to to provide unswitched power all the time to the CB which keeps the CB's memory (like the last CB channel you were on) alive. That lead goes to a constantly on power source, like what I described above.


QUOTE]

Jerry what radio are you running, My cobra 29 and my cobra 75 wx have one 12volt + and one negative, also my new galaxy 959 has only two wires one red and one black. Is it an older unit that you run?
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Old 01-30-2008, 04:00 PM   #6
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[QUOTE=silvergoat;176222]
Quote:
Originally Posted by Jerry Bransford View Post
Actually you will have two +12 volt leads coming out of the CB plus the black ground wire, one of the +12 volt leads is meant to to provide unswitched power all the time to the CB which keeps the CB's memory (like the last CB channel you were on) alive. That lead goes to a constantly on power source, like what I described above.


QUOTE]

Jerry what radio are you running, My cobra 29 and my cobra 75 wx have one 12volt + and one negative, also my new galaxy 959 has only two wires one red and one black. Is it an older unit that you run?
Not all radios have three power wires, just most do. Newer radios with electronic channel selection vs. the old style mechanical rotary knob generally always require a ground, a constant source of 12 volts, and a switched source of 12 volts. The constant 12 volts keeps the radio memory alive and on the last channel that was used, and the switched 12 volts allows it to be turned on and off from the ignition switch. Personally, I connect the switched and unswitched 12 volts leads together and connect them directly to the battery. That way I can use the CB even without the key having to be in the ignition switch.
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Old 02-04-2008, 05:18 PM   #7
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i have a 2007 jeep wrangler X and i am also instaling a CB radio. my problem is im not sure wear to run the wires through my firewall. should i just drill a hole through it or is there a rubber gromett i could put it through???
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Old 02-04-2008, 05:34 PM   #8
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There is a large rubber grommet located under your dash on the driver's side.


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