I don't know if the t4yf lights should come on, but I don't think they will.

If you don't have a battery in the t4yf, then the master has to provide power. I haven't seen futaba cords that had the phono jack in the middle that weren't from simulators, and I haven't see one work with Futaba gear like that. I could be wrong, but I think your problem is the cord.

If it's a power thing, then you might get it to work if you put a battery in the t4yf, leave the crystal out, and turn it on. Then try them two radios together.