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20-427 Owner's Manual Draft
through your vehicle's ignition
1. Disconnect the cable from the negative (–) terminal of your vehicle's battery.
2. Ground the black wire of the supplied DC power cord to your vehicle's chassis.
Note: Be sure the grounding screw makes complete contact with the metal frame of your
vehicle.
3. Connect the red wire of the supplied DC power cord to a voltage source that turns on and
off with the ignition switch, such as a spare accessory terminal in your vehicle's fuse box.
4. Insert the power cord's barrel plug into the scanner's DC 13.8V jack.
5. Reconnect the cable to the negative (–) terminal of your vehicle's battery.
Note: You must use a power source that supplies 12V DC and delivers at least 600mA. Its
center tip must be set to positive and its plug must fit the scanner's DC 13.8V jack. The
supplied DC power cord meets these specifications. Using a power cord that does not meet
these specifications could damage the scanner or the adapter.
from your vehicle's cigarette lighter
To power your scanner from a 12V power source in your vehicle, such as a cigarette-lighter
socket, you need a 12V, 600mA DC cigarette-lighter adapter (not supplied), available at
your local RadioShack store.
1. Insert the adapter's barrel plug into the scanner's DC 13.8V jack.
2. Plug the adapter's other end into your vehicle's cigarette lighter or power socket.
Note: When you use a cigarette-lighter adapter, you might hear electrical noise from your
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