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The first spreaders—aka marine floodlights—that I installed on my boat 30 years ago were ITT Jabsco Ray-Line 50-watt 12-volt Halogens. Like most spreaders, they mounted overhead at the back and front ...

Open your Rubicon's hood and head to the driver's side near the battery. You'll find a small wire bundle tucked away and wrapped in black tape. This is the factory aux switch output. Carefully remove ...