I have a pair of stihl radio earphones they are the ones that beep when you press the on/off switch to indicate the function selected. I recently dropped them and the earpads came apart they simply clip back together but the plug from the recharge socket to the circuit board became disconnected and I am not sure which pins to connect it to there are six pins on the circuit board where it became disconnected from which give a total of 3 possible connection points (3 connections on the plug) the battery connection is on the left looking down on the battery and into the circuit board socket and is the red plug

Any help would be gratefully appreciated