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Old 03-26-2011, 07:25 PM   #5
goodtohave
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Join Date: Jun 2006
Location: Canada
Posts: 132
My Ride: 325iT
It's a great idea and a nice DIY but there is no negative side to a fuse. If you had positive on one side and ground on the other you would have a dead short. It is simply in and out.

What you are doing is powering the lighter circuit with power from a circuit that is switched instead of constant.

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