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1157 is the older style bulb (insert n twist)
3157 are the new bulbs that are used now ( I believe are 'wedge' base) just insert in socket.
Lets see how 'Jackthemachinest' makes out on his quest.
By replacing the entire lens unit with the built in circuit board (as I did) it was a simple plug n play - works great - just cost more!
Sorry I don't know much about the new 'bus boards'.
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So I've been looking around for just the right lights for my 2012 Triglide. Reading this thread, I decided to order the Radiantz 9903-18, lay-down, red lens, strobe. Two problems with these lights. One is the connectors do not snap into place in the Harley female connector on the bike. There is nothing to hold them in. I know what your saying, "It's either the installer or the foam gasket will hold the connector in." Directly behind the connector in the light/lens assembly is a large cavity. The foam gasket never touches the back of the connector. Radiantz folks on the phone were great, however I got the usual "It's never happened before." This is generally the reply companies offer when what they really want to say is, "You are a cusomter and therefore you know nothing." The second problem is that once installed the turn signals went batpoop crazy. Another call to Radiantz and another $80 later they're sending a plug and play load equalizer. Now I'm into LED tail lights at the cost of the MOCO units that I'm sure would plug and play.
Radiantz 9903-18s have been on my 2014 for 15,000 miles ... they work.
Boborag:
"As for the plug...it is the foam on the existing lens that holds the plug in place."
"I'm also thinking you would need the Equalizer with the Moco units."
The foam does not hold the plug in place. There is a plastic spring molded into the connector that snaps shut when it is inserted into the female receptacle on the bike just as does every other such connector on the bike and every auto bring manufactured today. On the Radiantz lights, the foam stops way short of that location and there is a large open area going back to the lens that the connector can fall into. I think Radiantz doesn't want to admit they got a bad batch of connectors and they offered no solution. Harley service tech and parts manager assures me the Harley lights are $5 more than the Radiantz plus the cost of the equalizer, but do not require a load equalizer.
"As for the plug...it is the foam on the existing lens that holds the plug in place."
"I'm also thinking you would need the Equalizer with the Moco units."
The foam does not hold the plug in place. There is a plastic spring molded into the connector that snaps shut when it is inserted into the female receptacle on the bike just as does every other such connector on the bike and every auto bring manufactured today. On the Radiantz lights, the foam stops way short of that location and there is a large open area going back to the lens that the connector can fall into. I think Radiantz doesn't want to admit they got a bad batch of connectors and they offered no solution. Harley service tech and parts manager assures me the Harley lights are $5 more than the Radiantz plus the cost of the equalizer, but do not require a load equalizer.
Bob were they really that easy to install? I watched the video at the website. I have a 2015 that I want to get brighter tail lights for. They are listed at $29.00 ea. Sound right. Just want to check everything out. But look like a good deal.![]()
Mine were $100 each. The entire Harley stock lens assembly came off (2 screws and a plug) .... the entire new layback led strobe lens unit (9903-18) went back on ... and the plug was a perfect fit on my 2014. The plug goes into a horizontal plug "bank" under the lens.
They are VERY bright!!!!
View attachment 30784
Acouple of pictures of my lite problem. Radiantz LED lites, the plug with the little loop in the plug, snaps right in. The plug on the left thats looks like it has some weird plastic blob on it, loop has been cut off, would not seat all of the way. I looked at the pin side and it looks as tho some of that plastic stuff got inside of the female pin. Now both lights came from a different dealer. In other words I was trying save a buck. Both off of Amazon. The one with the bad plug I just sent back today to Radiantz with a note stating what the problem was. Amazon has refunded my money so I have another on the way from Cycle shack. Hope it comes with a good plug on it.
View attachment 30782View attachment 30783
Curious where you found them for $100? Thanks
Radiantz 9903-18s have been on my 2014 for 15,000 miles ... they work.
Boborag:
Got a little more info from Radiantz. Seems they are concerned about the strobe/turn feature.
"We don't suggest using the taillights with strobe foryour taillight/turn signals just because when your hit your turn signals thelight will strobe and when you hit your brake the lights will strobe. It mightconfuse the people behind you"
nevtat, you have to remember these are not specifically for Tri Glides. 2 wheelers have separate directional, maybe that is the difference.
Yes I understood that before I ordered the lights. I also believed a few people who posted to this thread that the 9903-18s worked great on their trikes. My bad apparently for not knowing they wouldn't work so well before ordering and for believing that Raiantz woun't lie to me on the phone regarding their product.
- - - Updated - - -
I don't give a rats butt if they are confused .. it definitely wakes them up ... and they see me!
I am old school and find hand signals confuses them even more. :xzqxz:
They are so much brighter than the stock wedge bulb when just running.
The tour pak LEDs on my 2014 are also signalling a turn and braking.
Boborag:
Nice video. I'm with the other folks who would like to see how the lights behave with the brakes applied and turn signal operating. Thanks.
I've tried the Search and either I'm the stupid guy - The search function doesn't like me, or there are no threads pertaining.
GO to E-bay and type this in for your search
JDM ASTAR 2x144 SMD 3157 3156 White 2400 LM 12V LED Turn Signal Brake Light Bulb
After looking at the Video of the manic flashing of both the Tail lights with the strobe option, I decided to just go with the straight LED Red Laydown option. $180 total cost and really like them. The Laydown looks better {IMO} and the difference in brightness is large! Took about 10 minutes - Turned the bike on - Hit the flashers for about 10 blinks and all works as intended. Very glad I went with the unit as opposed to LED Bulbs only. The Laydown. the Brightness and matching the lights to the Tourpak worked out good for me. Thanks
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S ooooooo??--- if I am reading all this correctly --- for a 2011 (Pre 2014 - electrical system) in order to utilize the Radiantz 9903-17 (non strobe) --- I also have to use/order an equalizer ???
What is the HD part # for a LED lay down that will work on a 2011?---- per above it appears that will work without the need for an equalizer if I am reading correctly.
Thanks