Wiring for 2008 Dodge Cummins.

+12V: Grey / Red
Radio Ground: Black and Black/Light Green
Radio Ignition (CAN data bus) ** See Note
LF Speaker +: Dark Green/Yellow
LF Speaker -: Dark Green/Light Blue
RF Speaker +: Gray/yellow
RF Speaker -: Gray/Light Blue
LR Speaker +: Gray/Light Green
LR Speaker -: Gray/Dark Green
RR Speaker +: Dark Green/Light Green
RR Speaker -: Dark Green/Gray

** NOTE: Ignition can be found as Pink/White in the Ignition Harness

See if that will work for you.

 

or this one. I'm not sure if the 2006 is the same as your truck but give this a shot also.

Dodge 2006 Ram Pickup EX. CAB Pickup
(PREMIUM SYSTEM)

RADIO HARNESS
Wire Function Color Note Fuse # Size Location
+12V DC Battery(Constant) Gray/red Radio pins 1 & 12 11 20 amp Integrated power module at left front fender
Switched Accessory Data
Ground Black Also black/light green
Left Rear + Dk.green/dk.blue Line level output
Left Rear - Dk.green/orange Line level output
Right Rear + Gray/dk.blue Line level output
Right Rear - Gray/orange Line level output

AMPLIFIER OUTPUTS
Wire Function Color Note Fuse # Size Location
12V DC Battery Yellow/red Amplifier pins C1-4 & C1-13 36 25 amp Integrated power module at left front fender
Remote Turn On (input) N/A See notes for B+ & accessory power to subwoofer amplifier.
Left Front Mid + Dk.green/yellow
Left Front Mid - Dk.green/lt.blue
Left Front Tweeter + Gray/orange
Left Front Tweeter - Gray/yellow
Right Front Mid + Gray/yellow
Right Front Mid - Gray/lt.blue
Right Front Tweeter + Gray/dk.green
Right Front Tweeter - Gray/lt.green
Left Rear Mid + Gray/lt.green
Left Rear Mid - Gray/dk.green
Right Rear Mid + Dk.green/lt.green
Right Rear Mid - Dk.green/gray
Center Channel + Gray/brown
Center Channel - Gray/orange
Subwoofer 1 + Dk.green/tan To the subwoofer amplifier
Subwoofer 1 - Gray/tan To the subwoofer amplifier

AT SPEAKERS
Wire Function Color Note
Right Rear Mid + Gray/lt.green Or dk.green/lt.green
Right Rear Mid - Gray/dk.green Or dk.green/gray
Subwoofer 1 + Gray/brown Channel 1 of subwoofer speaker.
Subwoofer 1 - Dk.green/brown Channel 1 of subwoofer speaker.
Subwoofer 2 + Gray/white Channel 2 of subwoofer speaker.
Subwoofer 2 - Dk.green/white Channel 2 of subwoofer speaker.

Available Notes
Notes

The SUBWOOFER AMPLIFIER, has B+ at pin 2 (red) with fuse no. 24 of 20 amperes in the integrated power module; the accessory line (pink/yellow) goes to pin 3 & has fuse no. 39 of 10 amperes.
The main amplifier is located at right side of dash, but the woofer amplifier is at left side of body.

 

good luck with the install. take some pics if you can. we all like looking at pics... if you go to the12volt.com and click vehicle wiring they have most of it there. That's where i got what you needed.

 

this is where i go...

http://www.the12volt.com/installbay/vehicles.html

once you find the vehicle that you are looking for then click on the stereo wiring portion.

 

Thanks man.. good luck with your install