Hi I am hoping someone has had better luck than me I can only get wiring schematics for the 3.7 .
some places don't even acknowledge that they came out with a diesel.
Can anyone please help !!

go to Ausjeepoffroad.com.au. Should be available there. If not, email me and I will chase it up. Should have a copy on my files.
John

Thanks John,
I have managed to get all the manuals but for some reason when it comes to wiring diagrams they only have the 3.7L so frustrating. does anybody have any ideas? even if I just get the engine control module and sensors.

Not sure what you are looking for but the KJ wiring is largely the same for the 3.7 and 2.8 except for diesel specific items. A brief glance at the 06 manual, downloaded from http://colorado4wheel.com/manuals/Jeep/KJ/ , brings up references to "diesel" in the power distribution section of the wiring diagram and glow plug specific wiring.

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Sold to LOST member my 05 Ltd, GDE Stg II turbo + TCM tune, SunCoast TC w. Transgo kit, Steiger window regulators, Samcos, Fumoto valve, 2nd gen filter head with Lub. Spec. bleeder, Hayden clutch & 11 blade fan, inverted spare, P-1 battery, BF Goodrich Long Trail TAs, Etecno1 glow plugs, timing belt at 50K miles/8 yrs