Help with boost gauge

[Stalker333]

Need Help Puting in just a boost gauge the papper work i got says just to tie into any vac line not get any boost o nthe gauge

99 ford mustang cobra 4.6 doch

thank you for your time

 

[wmburns]

Pictures?

Does the guage work if connected to a vacuum source such as a hand vacuum pump or a buddy's car?