Smart Start is the #1 Ignition Interlock Device provider in Harlingen with same-day installation available for your vehicle. We’re a convenient and affordable Texas IID supplier located in Downtown Harlingen at 513 E Jackson St with mobile services and price matching available to give you the best value. Our reliable customer service experts and licensed technicians will make your IID device experience quick & low stress. Smart Start is ready to schedule your Ignition Interlock Device installation in Harlingen. Call our Downtown Harlingen location & talk to a Program Advisor, who will help you schedule an appointment for your IID installation, calibration or removal.