If you're standing in front of a row of dark bollard lights and someone is waiting on a replacement quote, here's what to do first: check the LED bulb with a multimeter before you order anything. In seven years of coordinating lighting rush orders, I've logged 215 of them, and roughly one in three "failed" outdoor fixtures had a perfectly good bulb. The real problem was something else — a tripped circuit, a loose connection, or a failed surge protector.
The financial difference is exactly why this matters. A dead LED tube in a wall spotlight costs $10–$25 to replace. A new spec-grade bollard or spotlight costs $200–$400, plus labor, plus expedited freight if you're on a deadline. If you skip the diagnostic step and order fixtures, you're risking $3,000+ on a bet that loses 30% of the time based on our internal field data. That's a bad bet, and you don't have to take it.
Seven Years of Panic Calls Taught Me This
I run emergency lighting supply for a living. Architects, landscape contractors, and facility managers call me when a project is falling apart and the deadline is measured in hours. Same-day turnarounds are normal in my world, as are clients who have already approved a four-figure purchase order before picking up the phone.
In October 2024, a property manager called at 1 PM from a site where a developer's final walkthrough was scheduled for 9 the next morning. Fourteen bollard lights and six wall spotlights on the front entrance were dark. He'd already approved a $4,600 order for replacement fixtures and wanted to know if we could overnight them. I asked the one question almost nobody asks during a panic: "Has anyone opened a fixture and tested the bulb yet?"
Nobody had. I arrived at 4 PM with a multimeter. The entire system was dead because a ground-fault device had tripped after a rainstorm. One reset, one re-seated connection in a wall spotlight, and everything came back. Total cost: $0 in fixtures, about 40 minutes of my time. The walkthrough happened on schedule.
That's the story I tell every client who calls about a dark site, because it's not rare. It's the pattern.
How to Check an LED Bulb with a Multimeter
The test takes about three minutes per bulb. Here's the sequence I use on site:
- Switch off power at the circuit breaker. Not optional. Line voltage can damage the meter — and you.
- Remove the LED bulb or LED tube from the fixture. If it's a bollard or wall spotlight with a serviceable lamp, you'll see either a screw-base bulb or a pin-style tube.
- Set the multimeter to resistance mode (the Ω symbol). Diode mode also works if your meter has it.
- Touch the probes to the lamp's contacts. For a pin-based LED tube, test the two pins at one end. For a screw-base bulb, test the center contact and the threaded base.
- Read the display. Any resistance reading in at least one direction means the input circuit is intact. If you get "OL" (open line) in both directions, the internal circuit is broken and the bulb is done.
Here's the pro tip: don't chase a specific number. Some bulbs read 300Ω and fail instantly; others read 1.5kΩ and work for years. The more reliable method is to test the suspect lamp and a known-good lamp of the same type side by side. If the known-good lamp gives you a reading and the suspect gives you nothing, you've found your problem. Plus, if your meter has a continuity setting, skip the numbers entirely for screw-base bulbs — a beep means the circuit is closed, and no beep means an open circuit.
When the Bulb Is Actually Dead
Okay, so the multimeter says the lamp is gone. Now what? If the fixture takes a replaceable LED tube, you're looking at a $10–$25 part, not a $200–$400 fixture (based on quotes from three US electrical distributors, November 2024; verify current pricing). For a wall spotlight with a serviceable lamp, that's the entire job.
But when the fixture itself is the problem, the next decision is where things get expensive. And this is where I have a strong opinion.
The March 2023 failure changed how I think about first-time purchase decisions. A landscape contractor needed 22 path lights for a commercial site. He chose budget fixtures to save about $2,400 against the bega path lights I'd quoted. I told him it was a bad bet. It was his budget, so I didn't argue — I just watched it play out.
Eleven months later, eight of the 22 had visible corrosion on the mounting plates and three had water inside the optical chamber. The rework cost him $1,400 in labor and another $1,400 in replacement fixtures — those being the bega bollard lighting he'd skipped the first time. The $2,400 he saved was gone, and the 14 surviving fixtures had a known failure mode waiting for them. (Nobody wants to hear that when they're staring at a spreadsheet.)
I'm not saying every budget fixture is bad. I'm saying outdoor lighting is a brutal environment — moisture, UV, temperature swings — and a fixture's rated lifespan tells you more than its price tag. According to the Illuminating Engineering Society (ies.org), L70 is the number of hours an LED retains 70% of its initial light output, and it's the industry's standard durability signal. Spec-grade fixtures publish L70 ratings as a matter of course — bega lists them on its product spec sheets. When a product spec sheet doesn't mention L70 at all, I treat that as a warning sign, not an oversight.
The Total Cost-of-Ownership Math
Here's the arithmetic I walk every client through. Say you need 20 path lights:
- Budget path lights: about $60 each = $1,200 upfront. If 30% fail within 18 months — consistent with what we've seen in our own field testing — you're paying twice for labor and twice for product.
- Spec-grade bega path lights: roughly $160–$200 each = $3,200–$4,000 upfront, with published L70 ratings, serviceable components, and dramatically lower field failure rates.
The budget option only looks better in the first month. After one failure cycle, the total cost of ownership flips hard. I've had clients tell me they can't afford the spec-grade quote, and I get it. But the data from 215 rush orders says the cheap option fails again, and the second install is always more painful than the first. Value and price are not the same thing.
Where This Approach Won't Save You
I don't want to oversell the multimeter-first method. There are situations where checking the bulb is a waste of time.
- If the fixture housing itself is damaged — cracked lens, water inside the optical chamber, corroded sockets — a working bulb won't fix it. Replace the luminaire.
- If failures are scattered randomly across multiple circuits, a single bulb test won't identify the root cause. Call a licensed electrician and check for voltage problems first.
- If the area is dark tonight and people's safety depends on it, skip the diagnosis and get temporary lighting in place. Safety beats economy, every time.
And honestly, I've never fully understood why some LED drivers behave predictably on a multimeter while others don't. My best guess is that it comes down to driver topology and whether the input circuit confuses the meter's test voltage. If an electrical engineer reading this has the full answer, I'd genuinely love to hear it. In practice, the test is accurate enough that we run it on every single rush order.
One last field rule: when you're deciding whether to replace a single bollard or an entire row, look at the failure pattern. One dark light out of fourteen is usually a dead bulb. Three dark lights in a row is usually a circuit issue. That one observation has stopped more unnecessary fixture orders than any multimeter reading I've ever taken.
Pricing in this article is for general reference only. Actual prices vary by vendor, specifications, and order timing. Verify current rates with authorized distributors.