Acording to the jrickler diagram the grey vacuum hose goes to the tad valve. Which is wrong. It goes to the tab valve. And honestly every single mustang ive looked at the black vacuum Hose goes to the tad valve and the grey vac hose goes to the tab. The diagram hes showing is wrong.. Totally messed me up because it shows the air bypass valve hooked up to the tad solenoid. When the bypass valve goes to the tab and the diverter valve goes to the tad. Not the other way around. I think tmoss should revise the diagram because um bettin lots of people have tried to hook the tab and tad solenoids upbackwards because of a wrong diagram being shared all over the internet. Even the picture above shows what i mean. Grey vacuum hose to the tab solenoid and the black to the tad. Which is reversed because of the mirror. Tad closes to engine and tab to fender