The sender is insulated in the engine block and grounding occurs through the negative lead to a common ground

Tough reinforced plastic housing

PLEASE REFER TO THE OCX2 MODEL - DW180IXP4-EX-1

Single fitting handles both jobs

and Quad Watch Plus

Lo Pro Bar Light, Straight, 40" VHF The sender is insulated in9 32VDC, 5W LED, 25deg; spot beam, 60deg; flood beam, or 25deg; 60deg; mixed beam angle option, Black or White Finish, IP68 69K In collaboration with the Vision X engineering team, the Imtra LED Straight Bar Lights are specifically designed with the extra protections required to survive life on the open ocean. The 304 stainless steel brackets with isolation washers, copper circuit boards, tinned 18 gauge sheathed cables and marine grade gloss coating