This pickup hasn't worked in years and the player decided to let me give it a shot.  I got lucky on this one.  First thing to check on acoustic pickup issues is the power.  A fresh battery didn't solve the issue so I started checking connections with a multimeter set to continuity (beeps when a connection is good).  The culprit turned out to be the battery box.  All of the connections were good, but their wasn't enough pressure to hold the battery leads up against the contacts in the battery tray.  I used some foam to take up the slack and push the battery forward in the tray and voila! 

After resolving the pickup issue, here's a quick string-up from the vlog: