Join Date: Mar 2010
Location: SF - South Bay
Thanked 22 Times in 22 Posts
Rep Power: 11
NMEA 2000 and voltage drops
Hi folks - a couple of things I am puzzled by.
Upgrading the boat to NMEA2000 - anemometer, depth, speed, GPS, VHF. Mainly Garmin kit. Really liking the flexibility and simplicity - quite a step up from 1980s tech - but occasionally the data on the display flashes, or disappears. I have seen the GPS depth display flash (number unchanging), while the helm display shows normally; or the data at the helm disappears, while the GPS still displays it (power is on at the display, just no data being displayed). Any ideas? Loose connection? Power drop? I have the power connector in the middle of the NMEA connectors, as recommended given the total load, and checked the connections carefully...
My second question - possibly related - when the autopilot is engaged, I see a voltage drop warning on the GPS (set to warn me if voltage drops under 12v). Possibly related? e.g. undersized wire somewhere in the spaghetti (oops, I mean wiring harness)?
Thoughts would be welcome!