Recently replaced my 307 with a 403; while replacing all vacuum tubing and using the factory decal on the radiator shroud (from the 307) I find not all vacuum circuiting is shown. Cruise control vacuum lines are not shown on the decal. Also, I do not know what an 'EAS' or an 'EAC' is as depicted on the decal. In place of these two separate units it seems I have a plastic ball with two ports; according to the decal the EAS and EAC are separate units and depict only one port. In addition, I have a larger plastic ball with only one port which if the decal is correct is the 'air tank' to which the anti-diesel solenoid vacuum line runs to.

One problem I am having which is indicating I may not have the vacuum lines run correctly is the AC vents are not functioning, the AC blows out the floor vent.