A tow truck light bar has one job: keep you visible and alive on the shoulder while you work. But "visible" breaks down into several specific requirements, and the right answer depends on your truck, your state, and how you run your operation. This guide walks through what a tow rig actually needs from its warning lighting and where each piece should mount.
If you want to compare hardware first, bars with dedicated tow package rear sections are grouped in our tow truck light bars collection, every amber option lives under amber light bars, and the full line is in emergency light bars.
For the full-vehicle picture, bar plus grille and rear strobes plus scene light, use the interactive tow truck lighting setup guide.
The Four Things a Tow Truck Light Setup Must Do
1. 360 Degree Warning Coverage
Traffic approaches a recovery scene from every direction: the lane beside you, oncoming traffic on a two lane road, and vehicles pulling around the scene. A single forward facing strobe does not cut it. A full size roof or headache rack bar such as the 49 inch Low Pro Emergency Light Bar provides front, rear, and side coverage from one unit. On flatbeds and wreckers where the bed blocks the rear view of a cab mounted bar, add rear facing surface mounts like the XDR-5 strobe on the tail or pylon so you are never dark from behind.
2. A Traffic Advisor
A traffic advisor is the sequential directional pattern that tells approaching drivers which way to merge around you. On a highway shoulder this is the difference between traffic drifting wide of your scene and traffic threading past your elbows. The Low Pro Emergency family includes a sweeping traffic advisor mode across all sizes from 30 to 68 inches, controlled from the cab.
3. Scene Lighting
Warning lights make you visible; scene lights let you work. Hooking a car at 2am means seeing the tie down points, the axle, and the ground around your feet. Look for a bar with a dedicated white scene mode, like the 360 degree Halo scene light built into the Low Pro series, so you are not holding a flashlight in your teeth while running the winch.
4. The Right Color for Your State
Amber is the standard warning color for tow and recovery in nearly every state, and some states allow amber combined with white, blue, green, or red for specific uses. Rules on color and when you may flash vary by state, so check our companion guide, Amber Warning Light Laws by State, and confirm with your state DOT before you order a two color bar.
Running amber and white? Every Low Pro bar offers an Amber & White configuration. Pick your size in the tow truck collection and select the Amber & White option on the product page: the photos switch to that exact colorway so you see the bar you are actually ordering. Red and blue combinations are grouped under police light bars and red and white under fire and EMS light bars.
Where to Mount: Three Options Compared
Headache Rack Mount (Best for Most Wreckers and Flatbeds)
Mounting the bar to the headache rack puts it high, keeps it off the cab roof, and leaves it visible over most loads. It is the standard choice for flatbeds. Measure your rack's top rail before ordering: the Low Pro bars come with headache rack bracket options sized per bar, and the 55 inch and larger bars use a four bracket setup for rigidity. Watch two clearances: total height against any shop door you pull into, and cable routing so the lead does not chafe where the rack meets the bed.
Magnetic Mount (Best for Rotating Vehicles and Part Time Use)
Magnetic feet let you move one bar between trucks or pull it off a personal vehicle used part time for calls. The 17 inch and 11 inch Mini Low Pro bars are the right sizes for magnetic mounting. Keep the roof clean where the magnets sit, route the cord through the door frame with the door jamb lead option, and check the bar is seated before every highway run.
Permanent Roof Mount
A drilled, permanent mount is the cleanest install for a dedicated truck. It puts the bar at the highest point with nothing blocking any angle. The tradeoff is committing the truck: holes in the roof and a routed harness. If the truck will run tow duty for years, permanent is worth it. If the truck rotates or resells soon, use the rack or magnets.
Wiring: Plan the Lead Before You Buy
Every Low Pro bar ships with a 12 foot lead. That reaches the cab from the roof or rack on most single cab trucks, but a crew cab flatbed with a rack mount often needs more. Extensions are available in 10 foot and 15 foot lengths for a total of 22 or 27 feet. Measure your actual routing path, not the straight line distance: down the rack leg, along the frame, up through the cab grommet.
Sizing Guide by Truck Type
- Light duty wrecker or service pickup: 43 or 49 inch bar on the roof or rack, plus rear strobes.
- Flatbed rollback: 49 to 61 inch bar on the headache rack, rear facing strobes on the deck pylons, scene lighting aimed at the deck.
- Heavy wrecker: 61 or 68 inch bar for maximum presence, plus side facing strobes down the body.
- Part time or POV response: 11 or 17 inch magnetic bar with a door jamb lead, from the strobes and mini light bars collection.
The Bottom Line
Cover all 360 degrees, get a traffic advisor, do not skimp on scene lighting, and pick the mount that matches how the truck actually gets used. Start with the tow truck light bar collection, and if you are speccing a fleet, call us at 1-800-348-1287 and we will help you build the package truck by truck.
