First, make sure the GPS COM1 is in NMEA mode. Garmin, IIRC, ships their units in Garmin
mode.

Now the wiring:
GPS Blue (NMEA out+) to VHF white (NMEA in +)
GPS Brown (NMEA in +) to VHF green (NMEA out +)
Ground to VHF Yellow (NMEA in -)
Ground to VHF Orange (NMEA out -)


"William Andersen" wrote in message news:VWWpf.4148$_L5.4064@fed1read06...
Has anyone wired a Garmin 198C to a Uniden M525?
There are four NMEA wires on each and I have yet to make the right connections; I do have the wiring diagrams for each item.
The Garmin should send time and position info to the Uniden, and the Uniden should send received DSC info to the Garmin.