Confirm the exact connection method
Discuss the JVC KW-M690BW or another proposed receiver by exact model number. Ask which wired or wireless functions are supported and what your phone requires. Do not assume that similar-looking receivers have the same connection features.
Plan the physical details
USB location, cable access, and microphone position affect daily use. Mention where you normally keep your phone and whether more than one person uses the vehicle. Ask how any additional connections or mounting accessories will be included in the estimate.
Ask for setup before you leave
Bring a charged phone and the cable you normally use when appropriate. Request a walkthrough of supported pairing, source selection, and basic controls. Review operation while parked and confirm which functions depend on phone settings, applications, or a data connection.
