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If you want any electricall componant in a car to work without having the ignition turned on, then they must be connected to a source of power upstream of the ignition switch electrical circuit. This is known as a "hot source". It's like having it connected directly to your battery. Some car manufacturers choose to have certain electrical componants connected to the "hot source". Most avoid it since it can lead to something like the following: leaving the light or radio on causing the battery to run down. By putting it on the cold side of the switch, the manufacturer prevents you from unintentionally running down your battery. First, using a simple electrical circut tester you can make or purchase at any car parts store, locate a circut in your fuse box that is "hot" while the key is out of the ignition. You can take the wire from the lighter, trace it back to your fuse panel, remove it from the cold side location, reattach it to the connection that you found was "hot" already. Remember that you are increasing the load on that circuit and may need to increase the size of the fuse in the circuit to prevent blowing the fuse every time you push in the lighter.

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19y ago

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