Turbo Boost Gauge?

Help!! I just installed a VAC/TURBO gauge in my 89 Lebaron with a 2.5
Turbo. Can anyone tell me where the best place to connect the gauge
to? Also,how much vacume should i have at idle? Thanks.

 

you can get one of those plastic gauge pillar pods :

http://www.dieselpage.com/apillar.htm

and my 88 shelby turbo II sits at around 2 to 3 at idle

 

I put a tee in one of the vac lines coming off the intake manifold, and ran a
line to my gauge.
At idle mine reads about 20 inches of vac, and at WOT it reads 11 pounds of
boost.
Hope this helps,
Jude