A:AnswerYou can ask but the answer is probably no. The Techs have their day scheduled by install. This dedicates a certain amount of time to each install allowing to maximize appointments.
A:AnswerYes, I had no problems during my installation. The installer makes a list and verifies with the customer all body-damage on the vehicle before the job is started.
A:AnswerMost speakers do not come with wires because the wiring can be different from vehicle to vehicle. IF your existing wiring can work with your new speakers, then it is a simple replacement of speakers. Usually that is not the case, ... I had to buy a 'wiring kit' specifically for my vehicle .. undr $40.