I wouldn't say this thing is "foolproof" but the instructions are very basic. If for some reason you had to walk longer than expected (I bought a 25ft and barely made it) you can just go to your local hardware store and buy a longer piece of Romex. In the end, my setup looks super professional. 10/10 would buy again. (Drilling the rafters for the wiring was quite difficult, but that's irrelevant to my review of this product.)
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