A siren push button in black is included. It goes in a 16mm hole. It also has a siren button decal included that you could stick on the dash of your vehicle and then mount the button through it! For other areas please ask. The item "Willys Jeep Ford GPW WW2 Siren Federal Champion MARS Sirene 6V small" is in sale since Monday, April 22, 2019.This item is in the category "Vehicle Parts & Accessories\Military Vehicle Parts". The seller is "nicenewdukebits" and is located in Bristol. This item can be shipped worldwide.