A lot of questions... Here is the preemptive answer.
Viper 4105
Main 9 Pin
1 LIGHT GREEN/ BLACK FACTORY ALARM DISARM to PKUMUX Blue
2 GREEN / WHITE FACTORY REARM not used
3 YELLOW (+) IGNITION OUT (TO ALARM) not used
4 WHITE/ BLUE (-) ACTIVATION INPUTnot used
5 ORANGE (-) GROUND WHEN LOCKED not used
6 BROWN (-) HORN OUTPUT GREEN/ PURPLE (-) @ STEERING COLUMN HARNESS, WHITE Plug
7 RED / WHITE (-) TRUNK RELEASE OUTPUT to Trunk Relay, Pin 85
8 BLACK GROUND Chassis Ground
9 WHITE (+/-) LIGHT FLASH set to Positive to Parking Light relay, Pin 86
R/S 5 Pin
1 BLACK/ WHITE (-) NEUTRAL SAFETY SWITCH INPUT Chassis Ground ( add to Black wire on 9 Pin )
2 VIOLET/WHITE TACHOMETER INPUT WIRE BLUE/GREEN @ COIL PACK
3 BROWN (+) BRAKE SWITCH SHUTDOWN WIRE WHITE/ TAN (+) @ SWITCH ABOVE BRAKE PEDAL
4 GRAY (-) HOOD PINSWITCH SHUTDOWN WIRE to kit supplied hood pin
5 BLUE/WHITE (-) 200mA 2ND STATUS/REAR DEFOGGER OUTPUT not used
4-pin satellite harness diagram
1 BLUE STATUS OUTPUT to PKUMUX Blue/White
2 ORANGE (-) ACCESSORY OUTPUT not used
3 PURPLE (-) STARTER OUTPUT not used
4 PINK (-) IGNITION OUTPUT not used
Heavy gauge 6 Pin
1 RED (+) (30A) HIGH CURRENT 12V INPUT Battery
2 PINK/WHITE (+) Flex ACCESSORY OR IGNITION not used
3 RED (+) (30A) HIGH CURRENT 12 INPUT Battery
4 ORANGE (+) (30 AMP) OUTPUT TO ACCESSORY CIRCUIT not used
5 PURPLE (+) (30 AMP) OUTPUT TO STARTER CIRCUIT YELLOW (+) (20 Gauge) @ IGNITION SWITCH HARNESS, BLACK Plug
6 PINK (+) (30 AMP) OUTPUT TO IGNITION CIRCUIT PINK/WHITE (+) (20 Gauge) (2 Wires, use either wire)@ IGNITION SWITCH HARNESS, BLACK Plug
Door lock harness, 3-pin connector
1 BLUE (-) UNLOCK OUTPUT DEI 451M 3 Pin plug
2 EMPTY NOT USED
3 GREEN (-) LOCK OUTPUT DEI 451M 3 Pin plug
Trunk Relay
Pin 85 to Viper RED / WHITE (-) TRUNK RELEASE OUTPUT
Pin 86 to Viper thick Red ( add )
Pin 87 to Chassis Ground ( add to Viper Black wire )
Pin 30 to PURPLE / TAN (-) @ BCM, GREEN Connector, Pin 6 through ( 1k ohm and 560 ohm ) resistors
Parking Light Relay
Pin 86 to Viper White Parking Light output
Pin 85 and 87 to Chassis Ground ( add to Viper Black wire )
Pin 30 to WHITE/ BROWN (-) @ HEADLIGHT SWITCH, BLACK Plug though ( 1.2k ohm and 820 ohm ) resistors
451M wiring
3 Pin Plug to Viper 3 Pin Lock output connector
WHITE/ Black wire not used
BROWN / Black wire not used
Violet and Violet/Black to Chassis Ground ( add to Viper Black wire )
GREEN/ Black wire through 5.36k ohm resistor to PURPLE / GREEN (1-Wire Door Lock System) @ BCM, BLACK plug, Plug 2
Blue/Black wire through 2k ohm resistor to PURPLE / GREEN (1-Wire Door Lock System) @ BCM, BLACK plug, Plug 2
PKUMUX wiring ( follow Type B diagram )
Blue/White to Viper Blue (-) Status Output
Pink to Viper thick Pink ( add )
Violet to Viper thick Purple ( add )
Light Green not used
Blue to Viper Light GREEN/ Black
RED / White not used
WHITE/ Violet to vehicle side of cut PURPLE / BROWN (-) (20 Gauge) @ IGNITION SWITCH HARNESS, BLACK Plug
Violet/Black to switch side of cut PURPLE / BROWN (-) (20 Gauge) @ IGNITION SWITCH HARNESS, BLACK Plug
WHITE/ Black not used
WHITE/ Red not used
Red to Viper thick Red ( add )
Black to Viper Black Chassis Ground ( add )
That should do it. More answers :
1) Would I use the PKUMUX Install "A"? No, use Type B. You should have the PURPLE / Brown MUX wire.
2) Does the PKUMUX blue/white go to 4105 R/S "Primary Harness" 9-pin WHITE/ blue? No, follow the above wiring.
3) Do I only use the blue/white, red, and black wires from the PKUMUX? Yes, follow the Type B diagram and the above wiring.
4) Do I need to connect the 4105 R/S 9-pin brown (horn output) to the van horn wire? I would think so. Do I need a resistor/relay?
Not mandatory and horn is slow to respond. No relay or resistor needed.
5) Do I need to connect any wires from the 4105 R/S's "Remote Start harness" 5 pin to anything? Yes, follow the above wiring.
It is best to run in Tach Mode. You are running wires out to the engine compartment ( hood and battery )
6) Do I need to connect any wires from the 4105 R/S's "Satellite harness" 4 pin to anything? Yes, follow the above wiring.
7) Do I need to connect any wires from the 4105 R/S's "D2D Harness" 4 pin to anything? No, not used.
8) Do I need to connect anything to the van's "Starter 2" wire? The PKUMUX connects to that wire. Follow the above wiring.
9) You mention to use a relay for the rear hatch pop. When reviewing Bulldog security wiring guide it says to only use resistor
with (-) NEGATIVE output and shows the relay used with (+) POSITIVE output. Would I wire it the same as their diagram, but the
white wire from relay would go to RED / White (-200 mA Trunk Release Output) from "Primary Harness" 9 pin of 4105 R/S?
Bulldog R/S units output a (+) Trunk Release signal, your Viper has a (-) Trunk Release output. Follow the above relay wiring.
Soldering is fun!