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help! no power at trailer brake in-cab factory installed connector

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hey guys. new here, first post. just got a new tekonsha P3 controller to tow our camper with, and this truck is new to me. I've gone over just about everything I could (I have FSM wiring diagrams of everything) and Its just not making sense, think Ive thought it over too many times. 

truck is a 2000 CTD 2500 - factory tow harness front to rear, factory hitch, factory 7 pin, and it all works fine. i have power everywhere that i should, except for the incab connector to hook up my brake controller. i've also checked the 40amp trailer tow fuse, and the fuse is good. this is where ive gotten confused, and am probably going to come off kinda dumb. theres no power at this fuse! according to the wiring diagram, this is a direct battery feed through the PDC. what am i missing?! please help!  mopar1973man, im looking to you!

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