The connector/pinout information may be applied to the Garmin model GPSMAP 378
There are 2 pinouts found for Garmin GPSMAP 378 .
The pinout (pin-out) is a cross-references between the contacts (pins) of an electrical connector and their functions. The pin outs diagrams are listed below. Click for details
Garmin GPSMAP power and data cable pinoutUsed by GPSMAP® 276C, GPSMAP® 278, GPSMAP® 296, GPSMAP® 376C, GPSMAP® 378, GPSMAP® 396, GPSMAP® 478, GPSMAP® 495, GPSMAP® 496