Random issues after new stereo installed

Recently had a new stereo system put in my 09 Tacoma Double Cab TRD Sport, I have noticed that hen the door is opened and key is in ignition there is no chime alarm, also have noticed when the door is open it will lock the door while still opened, the headlights on alarm does not seem to go off anymore either, half the time when I open my door (even with it set to door mode) the main interior light will not come on, any ideas on what needs fixed?

 

Sounds like a faulty door switch. Either it wore out from all the opening/closing during install, or they bridged the switch so that your truck always thinks the door is closed. Since you mentioned it was intermittent, I'd suspect a faulty switch first.

 

Yeah I mean sometimes the interior light will come on sometimes not, if I hold down the little sensor on he door it will usually make the light come on if the light did not come on. It's nothing major but just a few minor things I'd like to get fixed ya know.