Where do you run your boost gauge?

[ECUSVT31]

I have a mechanical boost/vac gauge in my radio bezel in my 99 cobra and i was wondering where you 99/01 guys run your boost line? i can run it to the vac line on the back of the intake manifold but where can i get through the firewall?

 

[01cobrajm]

I went threw the wiring hole, its a PITA to do but i didnt wanna drill my firewall. Look way up under the dash above your clutch pedal and you'll see the cone groment looking thing.

 

[01yellercobra]

I did the same thing. I used a razor blade to cut a hole in the grommet.

 

[ECUSVT31]

Which vaccuum line did you hook into? And does anyone know what the small rubber black piece on the end of the boost gauge line to allow it to connect to something is called?