im looking for the vss and reverse wires for a 2003 dodge ram 2500 diesel with auto trans

Speed Sense white/orange conn. 2, pin 27 @ PCM

The PCM (Powertrain Control Module) is on the passenger side firewall. On the 4.7L motor, the VSS is white/orange in conn. 1, pin 13. On the 5.7L motor, the VSS is dk. green/yellow in conn. 1, pin 13.

Reverse Light purple/black + automatic day/night mirror

this is the info i found for you on a an alarm website,hope this helps

just verified this info on a all data pro website and it all hold to be true for the diesel pickup.

cool thanks for finding that info

where would i find the reverse wire? i know it can be found in the tailight harness but is there anywhere else it can be found in the cab or under the hood?

Reverse Light purple/black + automatic day/night mirror , if you look at my first response this info was on there too

i got the color. i was trying to determine if there was another location to find it like in the pcm harness.

the reverse light wire is in the rear view mirror harness on the wind shield, you know the mirror that you look at while backing up? that is where it is in the front of the truck, also usually they can be found in the driver side kick panel, in that harness that runs to the rear of the vehicle.