6v Battery Chargerschematic I Need To Connect Many Wires To A Common Pt But How To Do It In A Battery Since There Are 2 Cells? A 6V One?

I need to connect many wires to a common pt but how to do it in a battery since there are 2 cells? A 6V one? - 6v battery chargerschematic

I neeed filed several lamps Son PT DIF connection and then a cable on each side, where a pilot cable dirested match, lit the lamp gud touchj. U can say that the circuit is closed / So I'll take PT as common as it is 2-cell 6V?