Mazda CX-5 2018 Owner's Manual page 750

Do not mount any transceiver, microphones, speakers, or any other item in the deployment
path of the air bag system.
Do not fasten aerial lead to original vehicle wiring, fuel pipes or brake pipes. Avoid running
the aerial lead parallel with the wire harness to the best extent possible.
Keep the aerial and power leads at least 100 mm (3.9 in) from any electronic modules and
the air bags.
Avoid using the cigar lighter or accessory socket as a power source for the RF-transmitting
equipment.
Aerial positions:
: front right of roof
: front left of roof
: centre of roof