Ok,
I got this resolved. Apparently in the default 430_2 ini configuration the COM and NAV is set to AUTO. This does not work. Since the 430 is the second GPS in the aircraft I manually changed the COM and NAV to 2. See below in BOLD:
[GNS_430_2]
; comma separated list of render targets.
drawto = WINDOW, Garmin_430_screen
; is the master device if true.
MasterDevice = false
; connects to: 'PFC_STACK','PFC_430','PFC_530' or any '#PID' (#D002 for PFC_430)
; no value connects to first found, 'OFF' disables connection.
HardwareDevice =
; hardware selector number or -1 to disable.
HardwareIdx = -1
; selects COM/NAV Radios '1' or '2'. RadiosPair = 2
; uses computer time if true, simulator time otherwise.
ComputerTime = false
; connects GPS to Autopilot if true.
LinkOto = false
; connects GPS to HSI if true.
LinkHsi = false
; connects GPS to HSI course motor if true.
LinkCrs = false
; connects GPS to OBS input if true (LinkHsi/OBS or AutoNavSource/OBS).
LinkObs = false
; connects GPS to VOR if true.
LinkVor = false
; connects GPS to copilot side if true.
CopilotSide = false
; override GPS Unit# (1 or 2) or use 'this unit#' (0) (XPL 10.30+ for GPS2). AutoGpsSource = 2
; override VLOC NAV# (1 or 2) or use 'RadiosPair' (0). AutoNavSource = 2
; connects CDI mode to NAV/GPS switch if true.
AutoNavGps = false
; HSI lateral deviation scale factor.
CdiScale = 1
; HSI vertical deviation scale factor.
GsiScale = 1
; enables Shadin Air Data computer if true.
UseAirData = true
; enables Shadin Fuel Data computer if true.
UseFuelData = true
; enables RYAN 9900BX TCAD if true.
UseRyanTcad = true
; sets TCAD sound alerts volume in percent: 0 to 100.
RyanTcadVolume = 50
; sets TCAD maximum number of targets to X-Plane AI Traffic Count.
UseTcadAiCount = true
; connects GPS #1 to GPS #2 if true (both required).
UseCrossFill = false
; enables device failures if true.
UseFailures = false
; uses Simulator GPS commands if true.
UseSimGpsCmds = true
; updates Simulator GPS flight plan if true.
LinkSimGps = false
; saves the active route to flight plan file if true (.fms)
AutoSavePln = false
; sets fuel type: AVGAS,JETA,JETB
FuelType = AVGAS
; sets device power knob switch mode: NONE,DEFAULT_ON,DEFAULT_OFF
PowerKnob = NONE
; sets device power source:
; ALWAYS_ON,AVIONICS_BUS,MAIN_BATTERY,BUS_1,BUS_2,BUS_3,BUS_4,BUS_5,BUS_6
PowerSource = AVIONICS_BUS
; integral lighting rheostat index (0 to 3) or percent (-100 to 0)
Rheostat.Display = -100
; integral lighting rheostat index (0 to 3) or percent (-100 to 0)
Rheostat.Buttons = -75
; sets master sound volume in percent: 0 to 100.
MasterVolume = 100
; mute sound when simulator window looses focus if false.
NoAudioFocus = false
; sets trainer process CPU: 1 to 32 (0: last core, -1: automatic).
CpuAffinity = -1
; cdi/obs: CDI Key (0: disable)
AFMS.cdi_key =
; cdi/obs: Selected Course for GPS (0: disable)
AFMS.sel_crs_gps =
; cdi/obs: Selected Course for VLOC (0: disable)
AFMS.sel_crs_vloc =
; cdi/obs: V-Flag State (1: declutter)
AFMS.v_flag_declutter =
; main: GPS Selected (0: prompt)
AFMS.gps_selected =
; main: COM Presets (1: enable)
AFMS.com_presets =