[Elecraft] One more hint needed, 6 meter preamp

[Gil WA5YKK]

Appealing to the experts;

   With foggy head, I'm trying to get the idea of what coax connection 
goes where on the 6 meter preamp module. I gather that the 6 meter 
antenna is connected to J3, then obviously the BNC connections on the 
other side go to the matching connectors on the K3, but the text is 
fuzzy after that  - I don't register what goes to J1.
   Could those whom have mastered this one item give me a hint? (The 
Elecraft text has too many speed bumps in it that lead me nowhere, for 
some reason!)

Thanks, 73's
Gil WA5YKK