How do you figure out the wire cutting puzzle on level 30 disarming without in game hints?

On the box it has four charges, the poster it says it has to be a solid color. Before unscrewing the panel, it shows that the bomb model is B, so that leaves B as the set of numbers. And the light is more than five so it narrows the numbers to 5 7 and 9. The wires are set from 10 down to one. So fifth seventh and ninth wire up are the possible wires. The wire has to be solid color and that wire is seventh up or fourth down 😃