The OEM horn button just powers a relay. Any number of momentary contact switches can be paralleled to operate that relay.I am trying to modify my van so I can get back on the road after a disability. I'd really like to be able to hit the horn with my elbow on the door panel. Does anybody know how we might wire this? I would like the original horn to work also.
Any help is appreciated.
Thanks.
It switches to ground.... Not sure if the horn button in the steering wheel activates the relay with 12volts or ground.