where to insert a vibrato

[Randal]

Hi,I'm new to this forum,but what I've seen so far is great ! I am hoping someone will help me as I am not an amp builder.However I did put together one of those paint by numbers kits from tube depot.It is an awesome sounding 5f1 champ.So wanting to continue my success I wanted to add tremolo.I purchased an add on vibrato kit from weber speakers,put it together,but can't figure out where to insert the little board.Can someone please help me??? Thanks...Randal