Transformer Replacement

My mom's kitchen light, a six foot flourescent, is out. There's two 6 footers in the kitchen. They run off separate transformers. I followed a diagnostic chart and arrived at the transformer. Hers have three wires, one red, one blue, one black and white. I cannot find the same transformer in any stores. I'm assuming I can use the six wire transformer, two red, two blue, one white, on black and white. This one is common in all the stores. Volts(120), Hertz(60), everything else being equal.

Question 1: Am I right? I can use this 6 wire transformer?

Question 2: If I am write, how do I wire the six wire one where the three wire one has failed?

Thanks...

 

The six wire transformer is designed to run one lamp...

 

No help?

Come on, I know this can't be that complicated. It's MOM's kitchen! The best Italian food on Earth is at risk here!

 

The new ballast will have a list of the bulbs it is designed for. It will also have a drawing of how to connect it. If the list and the drawing matches your needs then you can use it.