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Old 06-17-2010, 10:58 AM   #1
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Question CB radio install

I just got a cobra 25 classic. Need some help on the easiest way to install! where to run wires (what source of power should i use) and where to mount the unit / antenna? Im sure most of yall have some experience with this. Thanks!

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Old 06-17-2010, 11:09 AM   #2
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For my power, I ran it straight from the battery, that way I could turn my CB without the Jeep on. In the pics you can see where i mounted my radio, and the antenna. I just ran the coax under the carpet to the back


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Old 06-17-2010, 11:32 AM   #3
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where/how is that antenna mounted? I was going to mount mine under driver seat but yours looks good, just dont know bout foot room down there?
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Old 06-17-2010, 11:37 AM   #4
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The antenna is mounted on the spare tire carrier. We were unsure if I was gonna get a good enough ground, but we did a little experimenting and got it to work. As far as the radio mounted there, I dont have an issue at all with foot room. Since it is mounted on the side of the console, it is practically on the center hump and away from your feet. Ive never kicked it or anything. It also makes it easy to adjust and change channels on since its somewhat in eyesight. It all depends on personal preference though
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Old 06-17-2010, 12:08 PM   #5
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when you swing your spare tire hatch open how does that wire stretch thats connected to the antenna?
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Old 06-17-2010, 12:15 PM   #6
Knows a couple things...

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So far as its power goes, Basic Radio Installation 101 guidelines are that you always power a 2-way radio directly from the battery. Other sources of power like the fuse box, cigarette lighter, etc. are notoriously electrically noisy from things like the fuel pump. If you have a manual transmission, there is an unused rubber hole plug just above the accelerator pedal on the fire wall you can drill a small hole through for running the power wires into the engine compartment. Use 12-14 gauge wiring & be sure to secure it with zip ties as you route it along the top of the firewall along the OE wiring harness to the battery.

An easy way to mount the antenna on the rear of the Jeep is via a bracket that goes between the tail light and tub. Tera at TeraFlex Driver's Side Antenna Mount makes them for both the passenger and driver's side tail lights. That link is for the driver's side but they make one for the passenger side too.

Mounting-wise, the TJ doesn't make it easy. My first CB mount was to the center rollbar hoop via self-tapping screws. The CB was mounted facing forward in the center of the rollbar so I could hear it easily and see what channel it was via the rearview mirror. It was out of the way yet the microphone could hang straight down and be placed in a cup holder for easy access.

Finally, take great pains to assemble the antenna mount EXACTLY as the instructions describe. 99.9% of all CB problems are because the antenna mount was assembled incorrectly. When that happens, the antenna shorts directly to ground. I pulled into Carl's Jr. parking lot a few days ago to have a hamburger & couldn't help but notice another Jeep whose antenna mount was misassembled. When its owner came out, I asked how his CB worked and he admitted it didn't work. I pointed out his mount issue to which he said he had been trying to make his CB work for years but never checked the mount.

There's more to getting the antenna working properly but we can help there when you get to that point.
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Old 06-17-2010, 12:15 PM   #7
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Quote:
Originally Posted by JDetlefsen View Post
when you swing your spare tire hatch open how does that wire stretch thats connected to the antenna?
I left enough slack in the coax to keep it from pulling or stretching too tight
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Old 06-17-2010, 12:20 PM   #8
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Finally, take great pains to assemble the antenna mount EXACTLY as the instructions describe. 99.9% of all CB problems are because the antenna mount was assembled incorrectly. When that happens, the antenna shorts directly to ground.
I had this issue when I first mounted my CB. So we had to find a way to isolate the antenna from the ground...after that it worked much better
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Old 06-17-2010, 12:46 PM   #9
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Also depending on the year there are two.. wires in the glove box you can use that are tied into the fuse block.. one is switched the other is not... that's how I did mine when I had it.
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Old 10-02-2012, 02:24 PM   #10
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Also depending on the year there are two.. wires in the glove box you can use that are tied into the fuse block.. one is switched the other is not... that's how I did mine when I had it.
digging up this dead thread but when you tapped into those wires (aux. power source wires) did you get " ignition noise " or any other running noise?

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