Charging Forward

For over 45 years, Guest has been designing electrical products that are built to withstand the rigors of life on the water. Each product is engineered to exacting performance specifications, including MARINE UL and CUL listings for an extra margin of safety. As one of the world’s leading manufacturers of battery chargers and maintainers, Guest offers a complete line of products to meet practically every application.

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Marine Wire Color Coding

The marine wiring color code for DC electrical systems per the ABYC.


Have You Checked Your Wiring Lately?

Electrical issues are some of the most common causes of boat fires. Keep your boat safe and your electrical systems performing smoothly with marine-grade electrical equipment from Defender.