Thanks Peter
Just one problem I dont have the manuals or schematics,even do I know how to
use the garmin.I hope someone has the manual that specifies the color of the
wires for data out and data in.Thanks for your help friend,your pointing me
in the right direction......Regards .....Angel

Peter Bennett wrote:
Garmin setting menu has port 1 using for sonar connection.Port 2 is available
for connecting.I need to know which cable colors to connect to spectrum radio
[quoted text clipped - 3 lines]
and cant tell which color was connected to the other one,Thanks for help.....
Regards ....Angel

Read The Fine Manuals that came with the equipment you are trying to
connect. I know that Garmin, at least, clearly indicates the purpose
of the various wires in their equipment cables.

I assume that you need to connect the Data Out (or NMEA-0183 out) wire
from the Garmin to the Data In (or NMEA In) wire on the Horizon. If
the Horizon has two NMEA In wires, the Garmin out goes to the In + or
In A, and the In B or In - is grounded.