Ok, here we go... The Bulldog manual states 96-2000 Dodge is Type "A" (positive pulse.) It isn't; it's Type "C" (reversing polarity.)
1995-97 Dodge Ram Pickup Alarm, Remote Starter, Keyless Entry Wiring Information
Constant 12V+ Pink/Black or Red Ignition Switch Harness
Starter Dark Blue/Yellow Ignition Switch Harness
Ignition Dark Blue Ignition Switch Harness
Ignition 2 Black/White Ignition Switch Harness
Ignition 3 DIESEL- see notes
Accessory Black/Orange Ignition Switch Harness (Heat/AC)
Tach Gray/Black Coil
Neutral Safety Black/White (-) Ignition Switch Harness
Brake Switch White/Tan Brake Switch or Ignition Switch Harness
Trunk Pin n/a
Parking Lights Black/Yellow (+) Driver's Kick Panel Yellow Connector or next to Column
Head Lamp Light Green Steering Column
Factory Disarm Light Green/Orange (-) 24 Pin Connector behind Driver's Dash
Door Trigger Yellow (-) Driver's Kick Panel Yellow Connector or Light Switch
Door Lock Orange/Purple 10 Pin Connector Driver's Kick or behind Glove Compartment
Door Unlock Pink/Purple Reverse Polarity
Horn Wire Black/Red (-) 74 Pin Connector behind Driver's Dash
Windows Up LF=Light Blue, RF=Brown/White
Windows Down LF=White, RF=Purple/White
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“Type C” Door Lock Test (Most Fords, some Chryslers, GM Trucks)
Using your test light probe both the lock and the unlock wires usually located in the driver’s kick panel.
Attach one end of your test light to ground probing both wires one at a time while locking and unlocking the doors with the driver’s side switch (usually the master switch). The test light should illuminate in both switch positions. Now attach one end of your test light to +12V constant, probe both wires one at a time again. The light should then illuminate again only in reverse order. This tells you that you have a “Type C” reversing polarity system.
So, in the driver's kick panel, find the harness coming from the driver's door. in there, locate the Orange/Purple (LOCK) and Pink/Purple (UNLOCK) wires.
Or/P (Door side, connect to Bulldog's WHT/BLK) Body side, Bulldog's GN/BLK
Pnk/P (Door side, connect Bulldog's BRN/BLK) Body side, Bulldog's BLU/BLK
NOTE: Connect the Bulldog's PURPLE/PURPLE-n-BLACK wire from the fuse to +12V constant power.