Problems hooking up Wonderful Creations 6V charger

GoldenMotor.com

blckwlfny1

New Member
Jul 14, 2010
128
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new york
At the risk of seeming presumptuous, I'm going to jump straight into the description. :)
I am wiring a "Mighty Wonderful" 6v charger.
As well as the following things (all of which have been RE checked and work fine)
6v headlight (grounded to frame
6v tailight (grounded to frame)
Single-throw toggle switch (has only 1 wire-MUST be grounded to frame)
6v battery pack

I took the green wire from the charger and as instructed attached it to the lighting system. The green wire is attached in a 3-way branch to the positive pole of: (1) the switch (2)the headlight (3) the tail light. And all are grounded to the frame (This system worked fine when tested with the battery pack wired in place of the green wire.)
HOWEVER...when I wired in the charger (green wire) the lights don't work AND the charger's green LED will only light when the charger's black ground wire in NOT grounded to the frame.
I can't provide a wiring diagram because I have NO IDEA what kind of magical gnomes are in this charger box.
Does anyone know what's going on?
Thanks.