yep, all depends on the install bay and actual installers.
i recommend anyone paying for an install take the time to talk to the installer face-to-face to discuss the car, the outcomes, and options. that will not only let you evaluate the installer but give them a reason to put pride in their work and do a better job. know that more reliable connections and more attractive mounting and installation methods will take more time and cost a bit more. that extra is worth it.
request any wire taps/connections are soldered and check that work afterward. that extra effort will mostly eliminate future wire issues. anyone who resists soldering isn't who i would consider a "good" installer.