It's the "most wonderful time of the year" – time to start decorating for Christmas. What's the first thing you should do when hanging outdoor Christmas lights?

STOP! Before you climb up haphazardly to the rooftop, test the lights to make sure you're not hanging a string of duds. Plug them in and fix any bulbs that aren't lighting. Only after that should you attach your light clips and start clipping along shingles, shutters, trees, and railings.

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