A black box (in most cases) will not overcome a hot boat. it's purpose in life is to control the downriggers reaction to the boat. the best practice for fiberglass boats is that all metal fittings below water line should be "bonded" which means they are all tied together on a ground plane.. The ground, or neutral, is a current carrying conductor, and is the source of many troubles because people do not regard it as such. the grounding, bond or green wire is the "safety" intended to channel current safely to ground in the event of a short circuit.. As far as i know fiberglass makes a poor ground. the negative term. of the battery is ground. poor ground causes so many irrating problems with anything electrical so i have wired my boat with a common ground wire right around and used buss bars under the dash in the bow & stern to ensure i have good ground..
How to ground marine electronics in a fiberglass boat? i'll be installing my furuno dff3d transducer tomorrow, wiring it up to the dff3d sonar module. i understand that a proper "ground" is critical to minimize interference ----i was also warned that making a proper connection with the transducer's grounding wire is also important.. The ac system is connected to earth ground in two places, one on the boat and one not on the boat. on the boat the ac grounding conductor (the green wire) is connected to the earth ground at the engine negative terminal.. Grounding and bonding in boats and marinas a vital link to safety capt. david e. rifkin and james d. shafer the september issue of exchange featured an article that posed some questions regarding the practice of grounding and bonding on boats and in marinas. the writer solicited an.
