Thread: 24V work light halogen bulbs

Hi Bob,
I have been searching for an LED alternative for a while now and haven't had much luck because of the base.
I bought one replacement Halogen for $16 at the local auto elec and promptly started looking for the LED's.
The base on mine is GY6.35 which is annoying as I have found every conceivable combination of voltages and bases except the one I have.
My next step is to look for an LED lamp head so I can replace the whole thing.
I found that the Halogen globe gets extremely hot and any coolant that might splash on the glass bakes on and compounds the problem.
The original globe lasted about half an hour. Of course this may have been due to the quality of the globe rather than anything else.
Oh, and I actually burnt myself on the lamp before it blew

Phil

If it is a Automotive style bulb it will have H1 or H3 branded on the base, other styles are probably available but these are the common one's which you can get easily get, even Rusty's would have them[should have them], $10 to $20 depending on quality.

I replaced my halogen bulb with one of these**.5W MR16 GU5 3 Pure White 5LED 12 24V Spotlight Bulb Lamp Ceiling Downlight 500LM | eBay

Took a bit of work to make it fit inside the factory housing* and a resistor to drop the V a little. Seems to work well enough.

With luck someone will have a better idea.

Stuart

* Though I figured having it behind glass was worth the effort.......

**In fact I think mine might only have 4 off 1w leds

Originally Posted by Steamwhisperer

Hi Bob,
The base on mine is GY6.35 which is annoying as I have found every conceivable combination of voltages and bases except the one I have.

The originals on mine were, by measurement and after wiki'ing GX5.3, but the holders are a multi-fit, and will also take the GY6.35, but as you say trying to find a 24V version....

I think one of Stuarts LED lights might be the way to go they are a cheap enough experiment anyway.

Halogen bulb pin types Bi-pin connector - Wikipedia, the free encyclopedia

Update. I bought one of these 12V/24V AC LED replacements for the 24V halogen bulb.

12V 24V SMD Circuit LED Light Bulb Lamp GU4 Super White JC Halogen Replacement | eBay

The base is a GU4 style, it fits the Hafco socket which is a multi-fit G6.35 / 5.3 / 4 socket.

The good news is that the LED bulb fits nicely in place of the halogen, it produces a brilliant white light, there is minimal heat output.

The bad news is that this one failed after 30 seconds which is just a tad shy of the claimed 4000 hour life, but I think that overall I'm on the right track.

Bob

Just a bit short of the advertised 40,000 hrs. It might be an idea to check the actual voltage coming from the transformer.

JohnQ

Originally Posted by bob ward

Update. I bought one of these 12V/24V AC LED replacements for the 24V halogen bulb.

12V 24V SMD Circuit LED Light Bulb Lamp GU4 Super White JC Halogen Replacement | eBay

The base is a GU4 style, it fits the Hafco socket which is a multi-fit G6.35 / 5.3 / 4 socket.

The good news is that the LED bulb fits nicely in place of the halogen, it produces a brilliant white light, there is minimal heat output.

The bad news is that this one failed after 30 seconds which is just a tad shy of the claimed 4000 hour life, but I think that overall I'm on the right track.

Hi Bob,
This has been a search for me for quite a while.
Now, I have no idea but the one in the link is 12-24V AC not DC. does that matter.

Phil

You think there is a driver in there or just a resistor?
I had to drop the voltage a little(though I think the light I used as a driver)

Stuart

@ JohnQ Definitely have 24V AC at the socket

@ Steamwhisperer Halogen bulbs aren't all that fussy whether they have an AC or DC supply. The LED substitutes definitely do need to be the correct AC or DC type to suit your power supply.

Originally Posted by bob ward

Update. I bought one of these 12V/24V AC LED replacements for the 24V halogen bulb.

12V 24V SMD Circuit LED Light Bulb Lamp GU4 Super White JC Halogen Replacement | eBay

The base is a GU4 style, it fits the Hafco socket which is a multi-fit G6.35 / 5.3 / 4 socket.

The good news is that the LED bulb fits nicely in place of the halogen, it produces a brilliant white light, there is minimal heat output.

The bad news is that this one failed after 30 seconds which is just a tad shy of the claimed 4000 hour life, but I think that overall I'm on the right track.

Brainteaser......If i buy 5 how many do i get free??
Ew

Originally Posted by Ueee

Brainteaser......If i buy 5 how many do i get free??
Ew

I see your point....

Originally Posted by bob ward

The bad news is that this one failed after 30 seconds which is just a tad shy of the claimed 4000 hour life, but I think that overall I'm on the right track.

Sounds like an LED driver is required. The item description appears to be a bit ambiguous, it says AC 12-24 in one section and then further down it contradicts that and says

"USE AT HOME WITH PROPER VOLTAGE (DC 12V AC 12V ,AC 110V ,AC 220V AVAILBLE) "

Doesn't mention 24V AC, so my guess is that the units supplied are 12V AC-DC, I think you might have to get a constant current led driver. Most of the ones I see are 240VAC input, not 24VAC input..

The only 24VAC G4/GU4 led's I can find seem to be for marine applications? This one would be a direct plug in without any other mods...LED Detail - "X-Beam" LED Replacement Bulb, Warm White, 24VAC


Regards
Ray

Originally Posted by RayG

The item description appears to be a bit ambiguous...............

The description can read either way and that may well be the cause of the short bulb life. Most of the guys selling these LED replacements are resellers of a vast range of whatever and I'm sure don't appreciate the not too subtle differences between AC, DC, 12V, 24V etc.

For the moment I'm happy to have learned that the 15 LED GU4 "tower" fits in the allocated space and also, on brief acquaintance, produces enough light.

Next up I'll bypass the Hafco 24V supply to the light, organise a 12V supply and try again.