Flashy, modern head units can spoil the look of a car’s interior, particularly if the car is a retro, classic ... A simple Bluetooth module designed for wiring into car audio systems.

It’s available in two finishes: black/brass or cream (shown). Bose seems to be in a nostalgic mood. Not only did it recently revive its classic 901 loudspeakers (although you can’t buy them), but its ...