Trinitron RF Only Adding Composite Mod KV-13TR10

[PF21]

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I have an RF Only Trinitron KV-13TR10 that I'm trying to add composite, maybe also S-Video eventually. I cannot find a service manual for this model or similar.

This particular Trinitron model had composite as an option in the KV-13TR20 model. I'm fairly certain my model has everything needed to simply inject the composite signal and S-Video signal. However, I'm not able to determine the proper location to inject the signals with my modest skills and knowledge on CRTs.

I plan to inject the composite at the RF converter chip's output or the jungle chip input but lack of a datasheet for either IC is making this difficult for me. Also, since I can see there is separate Luma and Chroma circuits on the board, I should be able to inject S-Video at the jungle IC's inputs but cannot determine the correct pins.

I'm hoping a more experience person can point me in the right direction.

[PF21]

Over the past few days I have been combing through service manuals for every Trinitron I can find from that era to try to find another model that uses that jungle chip, but I was unsuccessful.

I moved on to searching every datasheet and supplier website I could find for documentation on the chip, which I found goes by a few different part #s.

20192 (printed on my chip)
CX20192 (late identifier for this chip)
8-752-019-20 (looks like the original part #)

I also found a website that lists the other TV models that used this chip, but cannot find a service manual for any of them unfortunately. See screenshot of my findings below.

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