It has a rubber cover for the 2-pin connector to keep the electrical connects dry and corrosion free. Thick copper 18 SWG cable.
OptiMate O1 SAE71 Weatherproof Eyelet Lead x4 Pack
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OptiMate SAE71 Weatherproof Permanent Connector (01)
SAE71 OptiMate Weatherproof Waterproof Fused Eyelet 12V Permanent Lead O1
