I believe you are going to need the whole steering wheel based master switch. In any case, I am not going to take parts of a completely working master switch as I will not have a saleable unit. If I had a damaged or broken one, it would be in the mail to you. Sometimes the Toyota Stealerships can surprise you carrying parts you thought were not available and maybe check with them. A look at an exploded diagram that they use could provide you with a part number to order to repair yours.Happen to have a working windshield washer stalk off the steering wheel? If so interested in a price. Mine is missing the mechanism that initiates the washer on the end of the stalk.