You can find this product under Exact Fit LED Daytime Running Lights For 2014-up Mazda 3 (70-750).
Step 1: Remove the fog lamp bezel and insert the wire. Route the wires up to the engine bay.
Step 2: Put the LED daytime running way the same way you removed the stock fog lamp bezel. Move all the wires to the driver side and connect the daytime running light wires to the module box.
Step 3: Tap the wires. The black wire goes to the ground and the red wire to the fuse box ACC. Enjoy your new LED daytime running lights.