After setting the world record for dash lights, I've begun to tackle getting rid of them. While replacing the alternator, I notice what appears to be a vacuum line coming out of the left had side of the intake manifold (looking from front of vehicle to back).(see pic 1) The line was broken and separated, and I'm not sure if I did it while trying to remove the power steering pump. The line was very decayed and breaks apart with gentle pressure, so it needs to replaced regardless of how it occured. The problem is I'm not entirely sure where the line goes. It dissapears behind the manifold and I can reach up underneath and follow what I think is the right line, but upon exiting the right side it's much larger in diameter.(see pic2) In addition as it wraps around the engine and heads toward the lower intake, as the insulation shroud ends there are two lines that emerge (see pic 3).

Can anyone offer me any help or suggestions? I'm at a loss.

Many thanks in advance