I have an 04 s60 2.5T I want to install a turbo gauge. Any install advice? I have never done this before.

 

Hers a Vid from IPD gives a good step by and should help with what you are looking to do>Ipd Boost gauge installation video - YouTube

 

i did this along with my radio

in the morning ill take some photos of where in ran the vac line (itll make life easy)

 

oh i figured ide add some switches too
so the left turns on and off the turbo gauge the right turns on and iff my blue lighting in the car

all in all it was fairly simple just think through everything step by step and always unplug your battery