To order a schematic, click the ADD button, then enter a note in the shopping cart detailing the: Make Model Chassis Number of the radio you need the schematic for. If you run out of room you may include any information about the schematic in the Special Instructions" box on the checkout page. We have a vast library of schematics and if we have the one you are looking forwe'll send it to you. If we do not have what you needwe'll just exclude it from your order.