Houston Alternators & Starters

Fast. Easy. Discreet. RoadGuard Interlock gets you back on the road with a car breathalyzer that is FAST to warm up, EASY to use, and DISCREET so you can focus on the road ahead. As an approved Texas Ignition Interlock provider, we have convenient ignition interlock installation near you in Houston, Texas at 1211 Upland Dr. With a proven track record, RoadGuard Interlock offers top-tier ignition interlock devices that won't damage your vehicle, professional installation, and reliable customer service. Call us today to schedule an appointment for your car breathalyzer installation, calibration, or removal in Houston or any of our other convenient locations throughout the state of Texas.

Smart Start is the #1 Ignition Interlock Device provider in Stafford with same-day installation available for your vehicle. We’re a convenient and affordable Texas IID supplier located in Northwestern Stafford at 4150 Bluebonnet Dr 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 Stafford. Call our Northwestern Stafford location & talk to a Program Advisor, who will help you schedule an appointment for your IID installation, calibration or removal.