Find out what the law says. If you live in a jurisdiction where the law requires ignition interlock installation for the type of offense you have a conviction for, the judge cannot legally grant you a waiver of the requirement. He is bound by the law as much as you. If the law makes ignition interlock installation discretionary, however, a judge may issue a waiver if you file the proper paperwork.
Write your Motion, Affidavit and Order. Any time you ask the court to rule on something you need to file a Motion with the court. In this case, asking for a waiver would be a motion to modify your sentence allowing you to drive without an interlock. The Affidavit tells the court why it should grant you the waiver. You need to explain your reasons so the judge can make a decision based on facts, not just that you do not want an interlock in your car. The Order is a sentence granting the waiver that the judge can sign if he agrees with your request.
File the paperwork. The original Motion, Affidavit and Order have to be filed with the court. You also need to demonstrate that you filed copies of your request with the prosecutor who handled your case. After the court has your documentation it will set a date by which the prosecution must respond to your Motion. Just as you had to give the prosecutor a copy of your Motion, she will send you a copy of the prosecution's response.
Follow the court's order. In some cases the judge will ask for additional information. If it requests more documentation you must provide it within the time required. Likewise, if the judge wants to ask you questions it may order you to appear in court. You must appear. If you do not respond to the court's requests, your Motion will not be granted.
- final judgment image by Keith Frith from Fotolia.com