[Swan]

I have a 2000 48 volt series drive cart and this is how I bypassed the OBC (from Sergio)

On the Series Cart (S/N: A00...), the OBC provided the negative side of the Solenoid activation circuit when the charger was not plugged.

You can just disconnect the "Yellow" wire from the Solenoid small post that goes to the OBC and tape it.

You then need to run a new wire (16 ga) from that Solenoid small post directly to pack negative or B-.

You also need to run the negative wire (10 ga) from the back of the charger receptacle directly to pack negative.

You can leave the sense "Grey" wire alone since it is not used by the DPI charger and it is not connected to anything inside their charger.

You just need to reverse that process later if You want to sell the cart with the original charger.

Sergio