Q: I have 2005 volvo xc90 and I would like to add factory subwoofer, please let me know if I buy the one you have for sale if it is easy to install,

A: Hi, yes it is possible to add factory subwoofer to every xc90 that didn’t have rear ac compressor option, because it is installed under the rear window, I think it is also possible to install it under the rear floor, it needs factory harness and software download but it can also be installed by running signal from rear speaker and that is not difficult,