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Discussion Starter #1
Cost aside, should the turn signals, brake lights, etc. be left incandescent since they're "correct" (similar to the "horizontals-only" mindset), or stuff that and change to LED because they're brighter and better?
 

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if you find the right bulbs, you should do LED, just based on elec power reduction which is substantial

I went from 18amps to less than 2amps
 

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I won't do headlights and fogs, but that *is* another practical reason to do it. I'm leaning toward using Sylvania's ZEVO series. They work well in my F150's tails.
 

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I've read SO many reviews of infant failure and/or poor performance that I've given up on the idea.

I had previously bought some of the name-brand bulbs at Autozone to help people see the low-down brake lights in my T-Bucket. Pffft, fail - they don't have uniform distribution of light so it depends on the lenses and internal reflectors in each particular application. You won't know until you try if a bulb, which is essentially a bunch of flashlights aimed in different directions, will work for you. And if you try to get away with cheapo no-name China units, well you get what you pay for. I'm still out. As noted above who posted while I was posting, if you know of a bulb that works in a particular application, then maybe give it a try.
 

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I won't do headlights and fogs, but that *is* another practical reason to do it. I'm leaning toward using Sylvania's ZEVO series. They work well in my F150's tails.
I did not do headlights or fogs.

just signals, running and brake lights

I used philips

there is a thread going on with pics of the differences between various bulbs
 

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Discussion Starter #6
I've read SO many reviews of infant failure and/or poor performance that I've given up on the idea.

I had previously bought some of the name-brand bulbs at Autozone to help people see the low-down brake lights in my T-Bucket. Pffft, fail - they don't have uniform distribution of light so it depends on the lenses and internal reflectors in each particular application. You won't know until you try if a bulb, which is essentially a bunch of flashlights aimed in different directions, will work for you. And if you try to get away with cheapo no-name China units, well you get what you pay for. I'm still out. As noted above who posted while I was posting, if you know of a bulb that works in a particular application, then maybe give it a try.
The cheap-o bulbs typically do have a high failure rate. I know this from experience. Several chips will burn out, or, in the case of the panels I installed in my dome light housing, they throw back to the 70's disco era and begin flashing and flickering randomly. As you also found, some are better at light distribution than others, The ones that concentrate chips on the end don't use the reflectors, for instance, and create hot spots. The ZEVO bulbs look weird, but seem to work well. They also have a lifetime warranty (from a company you can actually contact).

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... The ZEVO bulbs look weird, but seem to work well. They also have a lifetime warranty (from a company you can actually contact).

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I mean, you got my interest, but 17-19% 1-star ratings, most something like this:

This is not the first set of ZEVO bulbs i have purchased, but it is the first set I have purchase online rather than in the auto parts store.

The quality of these bulbs compared to the bulbs purchased in store, make me question if these are genuine Sylvania bulbs.
The light output is not similar, the fitment of the bulb parts are loose, the plastic section appears to be of different/lesser quality material, and the give away kicker that these are not genuine bulbs IMO, is the bulbs DO NOT clock properly in the bulb socket, for proper reflection of the light output on the reflectors. This is not a mistake that a company like Sylvania makes.

These may be genuine Sylvania bulbs, and if they are, the quality has gone down considerably.
To some these are simply fancy LED bulbs, but improper output, improper clocking, and poor quality become safety concerns for the end user, regardless of their "for offroad use only" label.

I personally am disappointed in the product completely, considering the other 2 ZEVO bulbs i have installed currently (from the auto parts store) are so bright they light up a significant section of the road behind you, and the turn signal/brake function makes the light hard to miss, even in broad daylight, but these ZEVO bulbs (purchased thru amazon) are like comparing a candle to the sun its so much of a stark difference in light output.
I can't take the risk, I just can't.
 

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Discussion Starter #8
I think the key to this whole review is "... make(s) me question if these are genuine Sylvania bulbs." No complaints with the ones I've used.
 

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I think the key to this whole review is "... make(s) me question if these are genuine Sylvania bulbs." No complaints with the ones I've used.
Agreed, I figured "forgeries", then I read this review:

I have been using and recommending the Original Style of these (Pic Included) for 2-3 years now. Exceeded my expectations in every way. I have never seen a vehicle LED bulb be so perfectly white. The light output was evenly distributed and the brightness was excellent. Unfortunately Sylvania has redesigned the bulb and Ruined them.

The new design doesn't provide 360° light output like the old style and are not as bright or as white. The odd way the LED's are aimed towards the base of the bulb itself causes it to glow like a lampshade and my turn signal enclosure to emit a very soft light. The difference in brightness between Solid and Flashing is only about 20% which is especially awful during the day. These are junk and going back today. I wish Sylvania didn't go a ruin a good thing.
:confused:
 

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Discussion Starter #10 (Edited)
The old design was that of a "barrel" like many of the eBay ones I see now. The new design is, indeed, completely different.





I was skeptical that these would work, and can see how they might not do well in some housings, but these really are very good in the truck. It will be interesting to see how they perform in the Mustang.

Actually, I just looked at Sylvania's lookup guide, and the Mustang and truck use the same bulb. It may be time for an experiment. :shifty:

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Hmm, I'm liking this thread! :)
 

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Discussion Starter #12 (Edited)
Thought I'd give an update. The Zevo 3157R's work very well in the taillights, brighter and a bit more more red (even though it doesn't *look* more red in the attached pics). There is a very noticeable brightness difference between running light and brake light as well. I'd already picked up some inexpensive LED 921R's a while back for the third brake light. In the pics: Driver's side = Zevo LED

Their 3157A's are not so hot in the front, though. They were bright when viewed from the front, but the scatter (and therefore side visibility) just wasn't there. A 360° design is needed due to the shape of the reflectors. The Zevo was also too yellow for my taste. I need to find a bulb that is more orange-amber than yellow-amber.

Zevos in the reverse lights failed miserably. They were a lot whiter, but the incandescents throw more light, and I'm going to stick with them. Photo is attached. I'll let you guess which is which. :)

The EP27 flasher I bought flashed *much* more quickly than the stock one w/ OEM bulbs. I found that this flasher, though, can be modified with a tantalum capacitor to slow the flash rate. The video below shows a comparison of OEM, EP27 stock, and EP27 with a 1uF capacitor added.


The 1uF cap gives a nice rate for the LED's, but is still too fast for the (still currently) incandescent bulbs up front. I've procured some 2.2uF caps, and may try one to see how it looks.

Hope this info is helpful to someone else considering converting.

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