25EC58 Zenith composite inputs
 

I have a Zenith flat chassis CCII set and I have some tuner issues. For a while the set would display snow, but when left on for a few minutes it would eventually lock in a picture.

I will probably have a better signal and perhaps lose some audio him if I were to add composite inputs.

Has anyone added these to this model of chassis? Unfortunately I do not have a schematic for this set, but I am good at following directions.