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.but im not very technically competent! My old steering wheel had the horn buttons on the steering wheel itself. Ive since changed the steering wheel to a momo millenium. As a result i havent got a button to press the horn! will this TRD horn button from ebay do the job or will there need to be extra wiring needed? I've got a TRD horn press on my Italvolanti aftermarket s/wheel. Works fine. Just remember to tape up one of the wires (it's earthed through the hub itself) otherwise your horn may sound constantly! Did the TRD horn press come with the wiring? So i take it u just plug it into the wires from the old horn? does it come with the screws to attach to the steering wheel? PS.sorry for all the questions!'Snap-off' boss so that I can remove the wheel from the car for security. Therefore the wiring arrangements were probably a little bit different on mine. Honestly, it's a really simple job. 