Zenith 25KC45 video in?

[N9ZQA]

All -

I'm interested in adding a video input to my Chromacolor II. Since the tuner isn't of any use anymore (other than for the DTV converter), I'd like to be able to plug the converter directly into the set.

I've done this in the past on some tube sets, but that was a little easier - just going into the grid of the video amp through a large enough cap. I was fortunate that the sets I did this to had the proper video polarity and signal level that this worked.

I don't want to poke around blindly in this set if I can avoid it - would anyone with a schematic be able to point out a component junction or test point where I could shove in some video?

Thanks in advance!

-Jim