Reply... & early testing comparison info...

If you are upgrading from the OEM, you will like them.... if you ALREADY have A/M LEDs & are expecting a lot more.... well... the pics below are daytime with 3 of my family's F-150's lined up.
Granted I'm the only one with a lift on a truck... and again it's day light, but....well....????

Well... I will just say that I will be using & testing my truck at night time next & will be swapping out ALL 3 sets for an EXACT comparison.... in the daytime, I will be honest & say a $25 pair of JDM ASTAR 800 lumen outshines DD. Sorry & may not be accurate, since it was daytime.... but was convenient to show 3 trucks lined up.

I don't want to be negative & night time will reveal its true results of course, so don't let this pic or info mislead anyone at this time.
I WILL be fair & honest. But anyone can also zoom in on the pics too.

more results including true night time comparison to come in a day or two!
Pics:

 

TEST RESULTS ARE IN.....

Well, just as the daytime pics concluded, the night time results were consistent.

Not only from my eyes, the JDM ASTAR appeared brighter, but it also shows in the pics!
Not by a lot, but they are slightly brighter than the Diode Dynamics. (Sorry Nick).

I do want to be fair nor seem negative about this by any means. Diode Dynamics makes a great product! It's made in the USA and I love that!

But I will say that after many pair of reverse lights that I too have used & tried to get better light... the JDM ASTAR 800 Lumen was indeed brighter.

Bottom line: our reverse lights & bulbs can only do so much!
Regardless where anyone purchased an LED upgrade reverse light 921 bulb, it's definitely going to outperform any OEM bulb... PERIOD!

But it still can only do so much and the next alternative is aftermarket recessed bumper lights or cube lights,..etc. to give a brighter view of what is behind you.

It's up to the end user on how much they really want to pay & justify any cost and also impact to their wallet. Having a made in the USA product & a place to send in a warranty if that should ever occur is indeed nice... the over cost for a pair of bulbs is steep.

Again that's up to the individual & their choice.

Pics:

 

Thanks for the comparison. I have the JDM ASTAR 800 Lumens on order. should be here next week. looking forward to getting them in.

 

You're welcome & You'll like them.

The looks of a "projector style" is definitely sexier to see in the reverse bulb area of our taillights.... but in the end, we want performance. But these still look great too.

NOTE:
I have personally gone thru 7 sets of reverse lights including the DD XP-50 that I just used for this test.

So it's not a first time for me to want brighter reverse lights and that's why this curiosity really had me & had to do a true test.
Pic of my previous reverse lights!:

 

Well you just deflated my hopes. LOL

Although your stock OEM's seem fairly bright. Much brighter than what I'm able to see when I had mine. There's not a big difference between your photos of the JDM's and the DD's. In fact one could potentially chalk that up to your camera sensor. Still thanks for posting those pics. I'm not trying to refute your results at all.

Personally I think I might stick with the DD's because of how they test them to be consistent even when heated up, plus a 3 year warranty, plus made in the US.

I'd be curious what your results are after letting them stay on for 5 minutes or so. (Which I admit is an unlikely scenario whenever reversing)

 

Actually the stock OEM lights are pretty much useless.
Even with numerous led taillight bulbs I've had, I ALWAYS relied on aux back up lights. (I had PIAA Solitaire lights under the bumper, but now have recessed).
I've always had my auxiliary lights on a switch so I could always control when I needed the bright lights when backing up, hooking up a trailer.... or simply reminding the guy behind me to be aware that HIS high beams were on.

Don't get me wrong.... anyone will really like the DD XP-50 lights ESPECIALLY when going from OEM to LEDs.

The main thing is comparing others (hate to say competitors) and comparing Apple to oranges.

In this case... I had $25.00 in the JDM.... & $86.00 in DD.
THATS a huge difference in 2 reverse lights... that are ONLY used in reverse.... and the results show (including my eyes-....just not the camera or sensor) that a cheaper set is just as bright & in this case .... brighter.

The risk is quality. USA made & supporting USA company and with a 3 warranty.

I'm still debating on doing a return just because of the price factor. Trust me, I'm not afraid to spend the money if I have it.... but in a pair of reverse bulbs & the conclusive results is really hard to justify. If they were 1/2 the price, I would definitely keep them.

That's the main point as well...., that I think that many on here are trying to justify the overall cost factor of the DD XP-50 vs A/M choices that are a fraction of the cost.

There is no magic wand to do much better in our reverse light bulbs.... other than adding additional aux lights, imho.

 

That's my same dilemma as well. If I can get something sufficient or even brighter, is the $90 worth it? I am definitely on the fence and almost feeling some buyers remorse.

 

If your changing your OEM out in comparison to the DD's , you definitely won't be disappointed.
They are indeed a nice light.
Don't expect turning night into day, though.

If you already have LEDs in there now & was hoping for a difference... you may be disappointed.
If these were at the price of their HP-36, it would definitely be better to accept.
Again, this is just my honest & personal opinion because I really expected & was hoping a completely different result.

 

just ordered these:

https://www.amazon.ca/gp/product/B01...?ie=UTF8&psc=1




And this (will install above hitch , center down low like the Mustang):

https://www.amazon.ca/gp/product/B00...?ie=UTF8&psc=1

 

Impressive most impressive.... very detailed review, I have to tell you so far every projector type LED fails in this housing. Something could be engineered to work, but the trade off is more lost time, costs for R&D and so on. So the JDM 800's are prob the best overall units for function at any price range right now, even some of the other rectangle styles maybe a good choice for this housing.

I did find some import halogens, but I'm worried they will be a pain and super hot. So I will just find supplemental lighting to go with some other plug and play 921's.





But these again are a no go for our trucks.

2.0 out of 5 starsbefore you buy...
By WI Rob on November 3, 2014
Verified Purchase
I'm disappointed. I put these in my '13 F150, hoping to alleviate the lack of reverse lighting. They are a cool bluish-white color. That's all the good I can say. The tail lights, without the brake pedal pressed, glow brighter than these. Don't spend this much money on bulbs. Wasn't worth it.

Here are some more to play with JDM 800's + a few others, one seems to be a dead on match to the JDM 800's....