Kato Koki 107 Power Options? (8075-1 vs 8074-X)

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I'm looking into the options for equipping my Koki's with Digitrax compatible transponders for proper yard management, but I'm trying to figure out the best option for powering said transponders (such as Digitrax TL1). I had hope that the frame for the Kokis was the same between models, and that the 8075-1 model (numbered 107-471) with the led board could provide the answers.

 

Sadly, it appears that even IF I had the spring bars to connect to the pickups bogies (Part # 8075-1D), the frame is missing the parts to mount them, and part numbers for the rest of the needed parts aren't listed or printed on the parts other than the frame which is simply known as "8075"

 

Does anyone know of a viable solution to transfer power from Kato pickups to an unpowered car that I might be able to use, or has added transponding to a similarly unpowered piece of rolling stock?

 

Thanks!