Hi,
I have to agree with crutschow (his corrected post) in that for driving the segments you get better results using individual resistors.
In addition, the diodes may be superfluous in that if your switch does not have a center off position then you can do this without any diodes by running pins 7,2,4,9,10 through resistors directly to the 13.8v supply, then run pin 6 through a resistor to the switch, and you can get away with a SPSP switch then too. If your switch does have a center off position then you can eliminate D2 unless you see too much of a brightness change (which i doubt you will).