Review on FARBIN Interface Compatible Protective Waterproof Exterior Accessories by Jamal Gignilliat

I got this to replace my 2009 Ford Focus SES, the OEM horn is a single unit with high and low volume in one. These are 2 separate blocks, one for the treble and the other for the bass. The OEM wiring harness only supports 1 slot for 1 horn. What I did was order a splitter wire harness that connects to a single OEM wire harness and then goes to 2 connector pigtails for high and low. The volume is very loud for a siren, OEM quality, comes with new mounting hardware. Set the difficulty to 2/10. Requires a trim tool to remove the vehicle's floor pan and a 10mm socket to remove the horn and bracket.