California Code of Regulations
Title 16 - Professional and Vocational Regulations
Division 33 - Bureau of Automotive Repair
Chapter 1 - Automotive Repair Dealers and Official Stations and Adjusters
Article 8 - Accepted Trade Standards
Section 3363.4 - Installation Standards Applicable to Ignition Interlock Devices

(a) Prohibit customers or other unauthorized persons from observing the installation, maintenance, or servicing of an ignition interlock device.

(b) Have all tools, test equipment, and manuals, needed to install an ignition interlock device and to screen vehicles for acceptable mechanical and electrical conditions prior to installation.

(c) Provide adequate security measures to prevent unauthorized persons from accessing secured materials (tamper seals or installation instructions).

(d) Install an ignition interlock device in a vehicle taking into account the condition of the vehicle's mechanical and electrical systems.

(e) Install an ignition interlock device following accepted trade standards and instructions from the ignition interlock device manufacturer.

(f) Verify that the ignition interlock device is functioning properly after it has been installed in the vehicle.

(g) Ensure that an ignition interlock device is not installed in a manner that could adversely affect the performance of the ignition interlock device or impede the safe operation of the vehicle.

(h) Restore a vehicle to its original condition when an ignition interlock device is removed. All severed wires must be permanently reconnected and insulated with heat shrink tubing or equivalent.