charger wont turn on

[sportshooz]

Hello all, problems are compounding on my '06 DS 48V. Brought charger to local shop about a week ago, they replaced a relay and it charged fine that evening. Yesterday charger didn't turn on again so I brought it back and it bench tested fine. I tried bypassing the obc, (found out about that on this site). When i jump from the receptacle end of the yellow fuse to the main ground I get a click and loud buzz from charger but the needle stays at "0". When I jump from either end of the fusible link( if that's what it is) on the receptacle to the main negative nothing happens, charger doesn't turn on. Am I looking at a bad obc. swapped charger with neighbor and mine worked on his etc. so it's the cart messing up, not the charger.
I tried to reset the obc but the part where when you lock the throttle peddle down my reverse buzzer never sounds, is procedure different for a 2006 DS. sorry this is so wordy but I wanted to be thorough, thanks: