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Old 11-28-2017, 08:12 PM
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Cobra 29 LX install help

FYI, I am very new to CB radios and wiring, so might be a totally stupid question.

Apologies if this was asked before but I couldn't find anything concrete on the forums and am hoping someone can help me out.

My question is about wiring my Cobra 29 LX in my JKU 2016. I was planning to wire it straight to the battery and turn it off when not in use. Is this the right way to wire a CB? Specifically with the 29 LX, I saw some comments while googling around that even when the radio is off it drains the battery in a matter of days, but when wired to something that only draws power when the ignition is turned on (like the 12V plug next to the gear shifter) all the settings on the radio get wiped every time the ignition turns off.

Am I overthinking this? I would have thought that when the radio off it shouldn't draw massive amounts of power to just keep the clock and some presets in memory...

Thanks!

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Old 11-28-2017, 08:21 PM   #2
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CBs don't draw much power when not transmitting. Even if the CB radio was on but its squelch adjusted properly so its speaker wasn't hissing it would take weeks for it to drain the battery if the Jeep was never started.

There is a 12 volt power lug with a nut on it inside the Power Distribution Center under the hood with a nut on it that is ideal to power your CB from. Crimp a solderless rin connector onto your CB's red power lead and place it under the nut on the power lug. I'll post a pic of it tomorrow morning.

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Old 11-29-2017, 07:07 AM
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Thanks Jerry Bransford! Appreciate the response.

i found the power lug you are talking about in the Power Distribution Center. Great tip! I also found your post about putting in a fuse close to the power source to protect the wire. Would have never done it that way, so again, appreciate the help!

Cheers!
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Old 11-29-2017, 11:01 AM   #4
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You're welcome. Your CB also has three power wires. A ground, another that goes to constant +12v which keeps the channel preset on the same channel when the power is shut off, and 3rd is normally connected to a switched source of power so the CB shuts off when the ignition is shut off. Instead, I would wire both of those two power wires to the lug in the PDC so the CB stays on after you shut the ignition switch off. There will be many times you want to have the CB on but don't want to have to leave the ignition switch on to do so. Again, even if you forgot to shut the CB off after getting home it would take weeks maybe even a month for the CB to possibly drain the battery. Modern CBs barely draw any power at all when you're not transmitting and the speaker isn't making noise.
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