See what our Experts say about this M-3 and Associates Work Lights

• How To Wire the Exterior LED Utility Light Part M337FR
  The Exterior LED Utility Light part # M337FR has three wires, one for power, one for ground, and one for neutral. I spoke with M-3 and they informed me that the light follows EU Wiring Specifications so the power should be brown, the neutral should be blue, and the ground should be green with a yellow stripe. There is also a 12 volt version as well, part # M357FR which also has three wires but only the power and ground would need to be attached.
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• Can I Install Exterior LED Light On Aluminum Cargo Trailer Wall?
  Yup. The # M357FR is a recessed/flush footprint so you'll just trace the cutout size of 11-5/8" wide x 8-3/4" tall, pilot your corners, and deburr the opening. Use a gasket/sealant bead, and you’ll get that sleek “factory” look! One thing to note is that most aluminum trailers aren't going to give the best ground to the frame, so you'll get better results when running the ground wire straight to the 12v source (usually the battery). Do you already have a light installed, or is this a new...
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• Do I Need Separate Ground Wire For 12v LED Exterior Light On Enclosed Aluminum Trailer?
  Hey Angela, for the Silver # M357FR and Black # M336FR, best practice is a dedicated 2-wire hookup 12V+ and ground back to your lighting ground. Frame grounds can work, but a paired ground wire helps avoid intermittent issues - especially on aluminum-skin trailers like yours. Do you have a light you are replacing, or is this a new addition? Either way, you'll need cutout size of 11-5/8" wide x 8-3/4" tall.
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• Can I Use M3 12V LED Exterior Light Instead Of 120V Light On Jayco North Point?
  No, Ken, stick with the 12V models # M357FR silver or # M336FR black. A 120V fixture like # M396FR black or # M337FR silver won’t operate on a 12V circuit unless you had an inverter to change from DC to AC. Was there a reason you were wanting the 120v setup? If so, I can walk you through that process.
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• Can I Add Another Lens So M3 M357FR LED Light Isn't As Bright For Entry Of Trailer?
  For a softer entry light, many folks choose a smaller porch fixture or add a secondary porch light with lower output and use the M-3 # M357FR only when you need full area illumination. Plenty of owners note these are bright for doorways. I wouldn't recommend adding a darker lens to it as that's not how it was designed. If you want a smaller entry light that won't be too bright for you, I'd go with the # 328-007-60WE instead.
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• If Upgrading Exterior Utility Light On Trailer To LED, Is Install Any Different?
  Nothing special, Ethan - just standard 120V switched power for the black housing # M396FR and silver housing # M337FR. Many users upgrading to LED utility fixtures comment on easier installs and cleaner light compared to old bulb housings. They also last much longer and tend to be brighter. If you later want 12V operation, swap to the # M357FR instead.
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• Will It Draw Too Many Amps If I Run 2 12V LED Lights On Porch Of Enclosed Trailer?
  You’ll be fine on draw - LED utility lights pull modest current compared to incandescent. This particular 12v model # M357FR pulls only about 4 amps, so 2 of them would be 8 which is good for a circuit rated for 10a or more (most are rated for that). Just ensure your switch/wiring are in good shape and are wired for 12v, not 110. If it's 110 you'd instead need # M337FR which actually only pulls about .5 amps since it's running on higher voltage.
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• Old Screw Holes And Cutout For RV Exterior Light Don't Match Up With New Light M336FR
  Wade, that’s pretty common when swapping lights. Just fill the old holes with butyl tape and sealant, then drill fresh pilots for the new housing. Once it’s snugged up, it’ll look factory again. Only time you'll run into a bigger issue is when you have a large cutout and want to shrink it down for a smaller light - in that case it is a different can of worms since you'd need a trim piece or plate to cover it up. In your case on the # M336FR (also available in silver # M357FR), just enlarge...
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• What Is The Difference Between M3 RV LED Exterior Lights M357FR, M336FR, M337FR, M396FR?
  Exactly - # M357FR is the same low-profile LED utility light and cutout, just a corrosion-resistant silver powder-coat instead of black. If you want the black look, the # M336FR is the match in 12V. If you ever need house-current, look at the 120V silver # M337FR or black # M396FR. What is your application? If it's a trailer, it could use either one, but usually it's going to 12v like the rest of the lights on a trailer.
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• How to pick between 12v or 120v LED exterior porch light for 2018 Keystone Passport
  Lou, youll want to match the fixture to the feed in that wall: 12V branch means the # M357FR, 120V branch from the AC breaker panel means the # M396FR black or # M337FR silver. Don’t place a 12V light on a 120V line or vice-versa. Passport owners - did your porch area come wired 12V or 120V from the factory? If you didn't have wiring ran there and it's a full add-on light, you'll want to see if your lights run off your dc panel or a converter. That's most likely the case and you'll want...
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• How To Check If Toyhauler's Exterior Utility LED Light Runs Off 12v DC Or 110V AC
  You can parallel a pair on the same 120V switched circuit as long as the breaker and wiring are sized appropriately. It’s common to double up utility lights when you want evenly lit zones across a longer wall. Keep in mind, the # M337FR is for 110/120v. You can run those to the circuit panel without trouble, but your lights typically will be run off 12v from a fuse box or converter. I'd check by looking here: -Battery test: If it turns on with only the house battery connected (no shore/gen/inverter),...
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• How Does The M3 12v LED Light M357FR Hold Up Outside To The Elements?
  That’s one of the perks here on the # M357FR. The aluminum housing with powder-coat added tend to handle the elements well. We consistently see “no rust” and “still working great after a year” style feedback on these lights. What did you have on their before? Was it old? Another option is a plastic body, but it's more prone to cracking and fading so I'd stick with this heavy duty light.
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