This horn was installed on a 2013 Toyota Corolla. Watch the attached video. I used 16 gauge wire. If I find Toyota connectors I'll remake this pigtail with 18 gauge wire. The change after installation is obviously immediate. The horns have the same connections as the normal ones. So cutting is not necessary. I just made a pigtail connecting the original horn connector to both horns.
XtremeVision AC 55W HID Xenon Premium Slim Ballast - Get A Pair Of 2 PCS Now!
18 Review
π Enhance Your Chevrolet's Horn Sound with FARBIN Car Horn Special Plug: Wiring Harness Pigtail Connector
10 Review
π’ Wolo Air Horn Big Bad Max 619 - 12 Volt, Black
9 Review
π FARBIN 12V Mini Air Horn, Loud Car Horn with Chrome Zinc Dual Trumpet, Compressor Wire Harness and Button for Trucks, Cars, SUVs, RVs, Motorcycles, Off Road - Mini Version with Button
9 Review