# L.E.D. Resistor Help

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• 01-12-2019, 11:00 PM
kioolt
[QUOTE=gloucesterman;1153199]Hi,
Also Gator using these formula's the fact that it is being wired in parallel which is needed will not change the values???
Norm[/QUOTE]

The value of the LED and the resistor in parallel will be different. When you have two devices in parallel the combined resistance is measured at the point where the two devices connect. Since you will now have two paths of current flow the resistance will be lower. Also, this means that it will always be lower than either device by itself.
• 01-13-2019, 12:05 AM
PGlaves
[QUOTE=Pauls1150;1153207]T
If it draws less current, then a resistor in parallel would fix that; you need to know what the [U]difference[/U] in current is - the stock vs. the Puig - to figure the resistor's value.
If the Puig lighting draws more current, put a piece of black tape over the warning bulb.
[ATTACH=CONFIG]72266[/ATTACH][/QUOTE]

Send it back!
• 01-13-2019, 01:24 PM
gloucesterman
Hi,
You're right. My bad. That is a per bulb value. His resistor for each bulb will be the difference between his original load and the new led load. Once he has that difference he can figure out what wattage he needs for each resistor. I would up the wattage rating on the resistor to take into consideration overall voltage fluctuation.

[url]https://www.rapidtables.com/calc/electric/watt-volt-amp-calculator.html[/url]

5 Watts
12 Volts
.42 Amps
29 Ohms

Later,
Norm
• 01-13-2019, 02:27 PM
gator
So a couple of people caught what I was saying about parallel resistance. There is also the whole what does the canbus actually look for?
Lastly I have to say as usual I completely agree with Paul if the vendor sells a product that requires you to design and engineer a work around send it back. What I do know about canbus is depending on where you tie in you can effect any and everything on that part of the bus. IE if you tie in at the wrong spot you can cause all kinds of gremlins!
Gator
• 01-13-2019, 02:34 PM
gloucesterman
It Is Simple
Yes Gator,
But we are not talking about a parallel circuit here, and yes it is different but this is a simple series circuit. All he is trying to do is mimic the load that the computer originally saw on that circuit. I can't even imagine what might happen if you wired a resistor in parallel on a BMW!
Later,
Norm
• 01-13-2019, 02:54 PM
Omega Man
Well, it seems a lot of anger directed at Puig. While I don't know anything about Puig or their products....I thought I would take a look.

I can't find Puig supplying lights- [url]https://puig.tv/en/tuning-motos/license-supports/licence-support?bike=12860[/url]

It seems RevZilla has a kit- with a light- [url]https://www.revzilla.com/motorcycle/puig-fender-eliminator-kit-bmw-r1200r-r1250r-rs-2015-2019[/url]

There is a caution that- [QUOTE][I]This product FITS your 2017 BMW R1200R
Fitment Notes & Exceptions
Not compatible with OEM turn signals
Requires splicing of OEM license plate light harness[/I][/QUOTE]

It would be nice if the OP could return and give us an idea how the kit was supplied.

OM
• 01-13-2019, 10:53 PM
jr44
[QUOTE=Omega Man;1153260]Well, it seems a lot of anger directed at Puig. While I don't know anything about Puig or their products....I thought I would take a look.

I can't find Puig supplying lights- [url]https://puig.tv/en/tuning-motos/license-supports/licence-support?bike=12860[/url]

It seems RevZilla has a kit- with a light- [url]https://www.revzilla.com/motorcycle/puig-fender-eliminator-kit-bmw-r1200r-r1250r-rs-2015-2019[/url]

There is a caution that-

It would be nice if the OP could return and give us an idea how the kit was supplied.

OM[/QUOTE]

I did finally get a response from Puig. They stated I received an older version kit. Even though it was made specifically for my motorcycle, they later removed the l.e.d. light and expanded the hole on the mount to accept the o.e.m. bulb. The kit I received, I was unable to pass through the bulb and bulb holder to mount. They are sending me an updated part. However, I have misplaced the original bulb, bulb holder, and wire. So, it's not going to do me much good.
I really appreciate everyone's help.
• 01-13-2019, 11:12 PM
Omega Man
Nice :thumb
OM
• 01-14-2019, 01:04 PM
gator
[QUOTE=gloucesterman;1153254]Yes Gator,
But we are not talking about a parallel circuit here, and yes it is different but this is a simple series circuit. All he is trying to do is mimic the load that the computer originally saw on that circuit. I can't even imagine what might happen if you wired a resistor in parallel on a BMW!
Later,
Norm[/QUOTE]

Are you positive the canbus is only looking at load? I am not. I am trying hard to understand canbus as I recently purchased a 2016 RS. Most of my Experience is with Airheads and older Electronics and no I am not an Electronics guru. Very limited knowledge in fact. I can tell you a series resistor will not work correctly.
Gator
• 01-14-2019, 05:28 PM
azgman