LED lighting retrofit for interior lights

[whitelight]

Hi Dianne - I checked with Dr LED (we met him at the Vancouver boat show - yes, there is a Dr LED!) as to why there is a red X over the 10W halogen bulb on their website.

Anyway, in his words "No more halogen was what we meant !"

So, if you have room for this G4 LED Magnum ring to replace the 10W halogen , then go for it!

[lewster]

Hi Gang,

I just got a few G-4 direct replacement bulbs with 21 LEDs from SailorSams.com: 12 Volt LED Lights, 12 Volt Lights, Rope Lights, Small Microwaves, Marine Refrigerators, Coffee Makers, Electric Cooktops, Dock Cushions, Marine Hardware, Shrink Wrap for Boats, Boating Products and RV Accessories for overhead use, along with the same bulb in red for the overhead storage cabinets on the CCD. Expensive.....yes, but at a 10X reduction in amp draw and a light color equal to the halogens, they look great! I also found that the halogens were too bright anyway, so the warm white LEDs provide just the right amount of light for me.

Check them out if you're at the Fest in ABQ....................

[whitelight]

LED Replacement Bulbs - IMTRA Marine Products

For reference, Imtra is the distributor of the lights sold by several marine distributors, such as Sailor Sams. Here is the link to their LED products. This page also has a handy reference guide to determine replacements as well.

Apparently, Rekord Marine is coming out with a new line of soft white LED's. Also, Dr. LED is unveiling more LED lights at the Seattle Boat show in Jan 2008. One new style is going to be a G4 halogen replacement, 100 lumens, 2" in diameter, 1/3" thick.

We have two Dr. LED Saturn flush mount rings that will be installed in the galley of our 34 front kitchen. Will post pics when installed.

[BDandTTs]

Thanks for the inside information from Dr. LED, Whitelight. I did misunderstand his graphic. His lights might work especially well in vintage units. And thanks a lot for the link to IMTRA.

Based on Lew's recommendation for the 21 LED warm light, IMTRA's at $22 each sounds like our best choice as long as shipping charges are not outrageous. Hope to order on Monday.

[G-STREAM]

What do these LEDs do when the voltage drops below 12v? I put some socket style LEDs in my vintage lights and the minute the battery goes low I get zero output, atleast with the old style they just go dim.

[Ahab]

We replaced all the incandescent bulbs in our old PU with LED's and now doing the same with our new A/S. I use the superbrightled.com products as they seem to be the most bang for the buck. They now have a warm rendition which costs more and I only ordered one to try out. We have no problem with the slight blue tint offered by the conventional 24 and 32 unit arrays. We boondock and dry camp alot so these are a must for us.

[Foiled Again]

Thanks for bringing this thread back to life.

I finally burned through the replacement bulbs I bought 2 years ago and needed to order more - so this thread comes in mighty handy. No more paying $5 per bulb at Home Depot. Thanks.!

Paula (I just love the new smiley!)

[Motoman]

Has anyone tried the new higher wattage LEDS in the six LED configuration such as the G4-WHP6 White LED bulb on the superbrightleds.com site and compared them to the 21 LED style such as the ILG4-21L12V60W on the IMTRA web site IMTRA Marine Products

[nangoff]

I have yet to find any definitive lumens output of any of these LED arrays compared to classic halogen of 5 or 10 watts. Has anybody got a definitive lumen output of the LEDs?

Additionally, in a fair comparison the halogen light as mounted in its fixture will put out more light than a straight halogen bulb, so the light as mounted in its fixture would be the benchmark for a halogen bulb.

Also, is the comparison of lumens between light sources linear or exponential? Example, is a 10 lumen light source twice as bright as a 5 lumen source or is it 4 times as bright?

Thanks, Gerry

[Zeppelinium]

Originally Posted by nangoff

I have yet to find any definitive lumens output of any of these LED arrays compared to classic halogen of 5 or 10 watts. Has anybody got a definitive lumen output of the LEDs?
...
Also, is the comparison of lumens between light sources linear or exponential? Example, is a 10 lumen light source twice as bright as a 5 lumen source or is it 4 times as bright?

Be careful about Lumens. LEDs are not as efficient as the headlines would lead you to believe, but they seem much more efficient than incandescents because they emit their light in a fairly tight beam. I'm wondering that if a halogen and LED have the same Lumens, perhaps that means that the light on the subject is brighter for the LED because all of it is focused in that direction? On the other hand, the halogen's light is going off in all directions. Anyone know how the specs work?

Zep

[TIMEMACHINE]

Originally Posted by nangoff

Also, is the comparison of lumens between light sources linear or exponential? Example, is a 10 lumen light source twice as bright as a 5 lumen source or is it 4 times as bright?
Thanks, Gerry

Lumens are linear per instrument testing in an integrating sphere, however, the human eye has interesting characteristics that confuse perception of light sources and in many cases the perceived "intensity" of the light may in fact not be linear, usually becoming a percentage factor as opposed to a one to one ratio.

Keep in mind that visual acuity is also affected by color temperature and other optical effects in the transmission of light that also changes the perceived intensity.

Bottom line, even luminosity is not a fair value to judge the lamps you are looking at for replacement for halogens. Light manufacturers are just like truck manufacturers, sometimes they kind of fudge the numbers, usually by testing "golden samples" which are typically not the average lamp that they distribute.

[Westfalia]

Originally Posted by Motoman

Has anyone tried the new higher wattage LEDS in the six LED configuration such as the G4-WHP6 White LED bulb on the superbrightleds.com site and compared them to the 21 LED style such as the ILG4-21L12V60W on the IMTRA web site IMTRA Marine Products

Yep, that is pretty much what I am using in my galley over heads. You'll see my description of the lights if you head back a page. They are good and the light output and color is acceptable. The fit is a little tight in the stock light housing, and when assembled the lens may push the LED back and break the connection. Re-adjusting the pins usually helped.

However, I am having a progressing failure on one of the bulbs. I've lost roughly half of the array in one bulb.

[hshovic]

Greetings,

Just purchased and installed:

* Sailor Sam's G4 replacements for the halogens
(# IMT-ILG4-21LED12VW; 12 volt, G4 Style, LED Bulb, WARM WHITE)

* Superbright's 67 replacement LED's for clearance bulbs (I decided against changing the fixtures, since the existing ones look ok.)

* Bought one Superbright 1141 for task lighting to try it out. (1156-PCB-WHP9 White LED Lamp $ 21.95 (each))

The LED's in the halogen fixtures are slightly less bright, but have a nice spectrum. See below for before and after. I replaced 8 of 11 so probably have reduced AH by 80%.

The one to replace the 1141 was not so good. Quite dim but warm white, (kind of a waste of $21.95), so I went with fluorescents from Thin Lite for the task lighting. Twice the light at 1/2 the amperage. Cool white, but meant for task lighting, not ambience lighting..

Thanks to Davidz71 for his help and advice on this.

Then got two Lifeline 6V batteries for a total of 300 AH (I had about 170 before)... and because of the new batteries I needed an upgrade of the converter (Parallax ) and an extreme battery box makeover. More on this later.

And will try them all out in March.

[87MH]

Originally Posted by Zeppelinium

Be careful about Lumens. LEDs are not as efficient as the headlines would lead you to believe, but they seem much more efficient than incandescents because they emit their light in a fairly tight beam. I'm wondering that if a halogen and LED have the same Lumens, perhaps that means that the light on the subject is brighter for the LED because all of it is focused in that direction? On the other hand, the halogen's light is going off in all directions. Anyone know how the specs work?

I bookmarked this page a while ago when I was relighting the '78.

It appears as if this guy certainly knows his way around a lumen.

Don's Lighting Info Center!

I was really surprised that most fluorescents are more efficient than LED's.