keyless entry

how hard is it to install this in a 99 dodge ram pickup,

Depends on the Model Keyless Entry & your Mechanical / Electronic skills & tools.

There are a few Aftermarket Keyless Entry Units that have built in Relays that gives the ability to do Positive, Negative & 5 wire Reversal Locks ( which is needed on this truck ).If you buy a cheapie Unit that only has Negative Door Lock Outputs, then you will need to add Relays.

Constant 12 volts	RED & PINK/BLACK	IGNITION SWITCH HARNESS
Ignition 12 volts	D BLUE	IGNITION SWITCH HARNESS
Starter	YELLOW	IGNITION SWITCH HARNESS
Dome Light	YELLOW (-)	26 PIN CONNECTOR BEHIND DRIVER DASH
Trunk Pin Switch	N/A
Parking Lamp	BLACK / YELLOW (+)	74 PIN CONNECTOR BEHIND DRIVER DASH
Power Lock	ORANGE / VIOLET	16 PIN CONNECTOR IN DR.
Power Unlock	PINK/VIOLET	KICK PANEL

Reversal Rest At Ground Door Locks

Accessories
Window Up	D\ L BLUE P\ BROWN / WHITE @ MAIN SWITCH
Window Down	R/ WHITE S/ VIOLET/WHITE
Ign Key Warn	L BLUE (-)	IGNITION SWITCH HARNESS
Trunk Release	N/A
OEM Horn	BLACK/ RED (-)	74 PIN CONNECTOR BEHIND DRIVER DASH
Headlights	L GREEN (-)	AT HEADLIGHT SWITCH
OEM Alarm Arm	N/A
OEM Alarm Disarm	L GREEN/ ORANGE (-)	IN PIN 8 OF A 16 PIN CONN DR.KICK *

Reversal Rest At Ground Power Window Circuit 

* OEM DISARM* Connector Located In Body Harness Side Of Drivers Door Harness To Disarm Ground Thru A 1565 Ohm Resistor.

Remote Start
Tach Signal	BLACK/ GRAY	AT POWERTRAIN CONTROL MODULE *
Ignition #2	BLACK/ ORANGE	IGNITION SWITCH HARNESS
Ignition #3	N/A
Accessory	BLACK/ WHITE	IGNITION SWITCH HARNESS
Neutral Safety	BLACK/ WHITE (-)	AT SWITCH ON TRANSMISSION OR PCM *
Brake Light	WHITE/ TAN (+)	AT SWITCH ABOVE BRAKE PEDAL
Reverse Light	VIOLET/BLACK (+)	AT SWITCH ON TRANSMISSION
Rear Window Defrost	N/A

* Power Train Control Module (PCM) Is Located On Passenger Rear Of Engine On Firewall. BLACK/ GRAY On 8.0L Engine Is 2 Cylinder Signal.(From Installer Tach Wire GRAY/BLACK) Diesel Glow Plug Wire Is ORANGE / BLACK At PCM. Can Also Be Found At 74 Pin Connector Behind Instrument Cluster.

MO

Don't Learn from Others Mistakes

You Might Be the One That Knows.

If you can unplug the molox door boot and pull the door lock wirer inside the truck it will be easy to work on that way