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Hi, I have seen a few older posts regarding replacement of wires to both lights. They tell me the basics but I am clueless. I can't get the lights to work and was just going to run new wire if possible. Can I simply tie in to the old wire and snake it through? Are there any videos or photos of the process? Is this a reasonably simple project?
Can anyone provide specifics on how to tackle this? I have some mechanical ability but I'm not an electrician.
Thank you in advance.

(please follow guideline #1 and use the full 4 digit year)