PYLE Audio PLVS7HM - Manual (Page 9)

Step of install headrest housing
6
Setup work
remove the headrest and set it in an uncluttered
work area. Take the appropriate precautions to
ensure that it is not damaged during the installation.
Unscrew it and takeaway the back cover before
install to headrest housing or sun-visor housing
CAUTION: make sure the screw are not long
enough to go through the headrest!
If you have any doubts about this type of
installation, please consult your local mobile
electronics retailer. Cutting and make holes in
the headrest will cause damage which is
expansive to repair.