A CB, short for citizens band radio, allows short-range (1-10 miles) two-way communication between two radios that are tuned to the same channel. Citizen band radios operate at a maximum of four watts at the 27 megahertz bandwidth. Mobile CB radios can be installed in your vehicle to allow communication to other motorists or to base units in homes or businesses. Once you connect the power lead on your mobile CB to your vehicle's fuse box, you'll be ready to communicate with other CB users.
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Things you need
- Continuity tester
- Butt wiring connector
- Add-a-fuse wiring connector
- Fuse puller
- Fuse (to power CB radio)
Locate your vehicle's fuse box, which is usually in the passenger compartment on the driver's side under the dashboard.
Locate a fuse in the box to power your CB radio that will be acceptable to tap into. Use the fuse for the car radio if you wish the CB to be able to turn on when the key is turned to the "accessory" or the "on" position. Check your owner's manual for the correct location of the fuse.
If the owner's manual is not available, use a continuity tester to locate an acceptable fuse. Ground the tester by connecting the alligator clip of the tester to the bare metal framework under the dash. Carefully push the pointer of the tester into the metal contacts of the fuses in the fuse box until the light illuminates on the tester, indicating the fuse has current running through it. Make sure the amperage rating of the fuse is higher than the output amperage of your CB radio. Check the owner's guide of your CB if you are not sure.
Splice the red power output wire from your CB radio to the wire on an add-a-fuse wiring connector (available at auto parts stores) with a butt connector. Slide the bare wires from the CB and the connector into each end of the connector. Crimp the connector on each side with a pair of pliers so that the wires cannot be pulled out.
Remove the fuse in your fuse box that you have chosen to power your CB with a fuse puller. Push in the add-a-fuse connector into the slot where you removed the fuse. Push the original fuse back into first slot in the add-a-fuse connector, this way the original accessory powered by the fuse will still be operational.
Check your CB owner's manual for the correct amperage of fuse needed to power the CB. Purchase the correct amperage of fuse at an auto parts store. Push this fuse into the second slot in the add-a-fuse connector.
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