V2 now includes several updates over original version 2" longer wire for those running high bar mounts with taller bars. Mounts to the backside of the OEM Brakes, Hope V4 & E4 Brakes and Hayes Dominion A4 with 2 bolt clamps. Includes a back half clamp to be used with non OEM brakes such as TRP, Hope Tech 4 V4 & Shimano Saints etc. Includes Burnt Titanium screws to work with included back half clamp Plugs into factory wiring harness, No cutting or splicing A perfect replacement horn button when you are using an aftermarket speed controller and don&';t want to retain the OEM Horn/Eco switch