I have a bet with a coworker.he says that a 4 lamp instart electronic
ballast can be wired with the one red and one blue lead connected to the
same yellow wire with no harm to the ballast. instead of 2 blue wires
connected to yellow or the 2 red wires connected to yellow as on the diagram
on the ballast.he said that the 2 yellow wires that come out of the ballast
are soldered together inside the ballast.i believe hes wrong and the
ballasts life will greatly be reduced.if anyone has input on the matter it
would be greatly apprecated.