Adapter harness From 27 Volt Maka to 24 Volt Mars VN2512 bill validators (NEW) Mars MEI (Mars) Custom Harness Adapter Harness Adapts 27 Volt Maka Fits VN2512 Validators High Level Harness NEW PART Need to convert your old 27 volt Maka, in a USI, FSI or other machine to a newer VN2512, 24 volt model. This is the harness for you. These are custom made for us. Power plug shown in picture is the from the 110 volt model, actual 27 volt Maka power plug differs slightly from picture.