Additional Rear Brakelight LED - Inexpensive yet Bright - BMW R1200GS Forum : R1200 GS Forums
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post #1 of 23 (permalink) Old 26-Jan-2019, 04:05 PM (920) Thread Starter
'14 R1200 GS Adv "Freya"
 
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Additional Rear Brakelight LED - Inexpensive yet Bright

I wanted additional rear lighting above my stock tail/brake light. I had used a similar LED on my FJR and decided to add one to the GSA as well.

The LED I used is a $14.99 surface mount Emergency Vehicle light ( Link to Amazon ) It is connected through the EZCan. I drilled two holes in my top box, one 1/4" hole behind the light, the other a 3/8" hole at the right edge of the bottom mounting plate. I ran the lead from the back of the light through the Top Box, and out the bottom hole through a rubber grommet. No grommet was required behind the light due to the lead molded configuration. I ran the lead into the compartment behind the tail light accessed by removing two screws underneath the rear fender. I used a two lead waterproof connector there to facilitate removing the top box. I then ran the lead up into the under pillion area where the EXCan is located and used another waterproof connector supplied by EZCan.



As you can see this LED is much more visible than the stock light and it is controlled by the EZCan so it flashes when you slow or brake.
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post #2 of 23 (permalink) Old 26-Jan-2019, 07:45 PM (073)
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That is bright! I agree that BMW tail lights are horrible. Its first thing I do also, add some hyperlights or skene lights.
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post #3 of 23 (permalink) Old 26-Jan-2019, 09:24 PM (142)
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I will need to take a close look at this set-up when you are over this way. I had one of those on my Super Tenere and it was a real attention getter.
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post #4 of 23 (permalink) Old 26-Jan-2019, 09:27 PM (144)
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Did you consider putting on the bike? Do you think it will fit an place?
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post #5 of 23 (permalink) Old 27-Jan-2019, 07:30 AM (562)
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Looking for a similar setup for my '05, no EZCAN, that will not throw a code malfunction. Rather mount it on the bike , but could set up a quick disconnect to also use on the top box when running with the box. I purchased a pulsing light device but have not hooked it up yet. It would be sweet to work with this add on light.

'05 1200 GS
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post #6 of 23 (permalink) Old 27-Jan-2019, 10:44 AM (697) Thread Starter
'14 R1200 GS Adv "Freya"
 
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Quote:
Originally Posted by Pterodactyl View Post
Did you consider putting on the bike? Do you think it will fit an place?
I considered putting it on the bike but wanted it to be higher. As the Top Box stays on my bike 98% of the time I decided that was the best place for it.

Quote:
Originally Posted by Southpaw View Post
Looking for a similar setup for my '05, no EZCAN, that will not throw a code malfunction. Rather mount it on the bike , but could set up a quick disconnect to also use on the top box when running with the box. I purchased a pulsing light device but have not hooked it up yet. It would be sweet to work with this add on light.
This light draws minimal current, could easily be wired into the tail light/stoplight.
As stated above, I wanted it high for additional visibility thus the Top Box Mount.

I'm not certain where you could mount it with any great deal of visibility if you didn't use the Top Box.
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post #7 of 23 (permalink) Old 27-Jan-2019, 11:43 AM (738)
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Quote:
Originally Posted by Southpaw View Post
Looking for a similar setup for my '05, no EZCAN, that will not throw a code malfunction. Rather mount it on the bike , but could set up a quick disconnect to also use on the top box when running with the box. I purchased a pulsing light device but have not hooked it up yet. It would be sweet to work with this add on light.
I'm in the same boat with my '06. Found an LED replacement light unit that's much brighter, but also about $90 and still just a single light in the stock location. I've been thinking about how the incandescent taillight on my bike works, and the way the controller will pulse-modulate the brake light if it senses the running light has burned out... I've found there are 1157-base LED bulbs on Amazon, etc., that claim to be brighter than standard incandescents but draw 1/3-1/3 the current... which leads to the idea of putting one in the standard taillight housing, and two or three more in auxiliary housings on the back of panniers, or maybe on pannier brackets (something to create a triangle rather than the single point of the stock light. Haven't gotten around to trying anything yet, though.

The other thing I've been thinking about is using a standard trailer lighting coupler like this one (currrently 25 bucks at Amazon) and a pair of dual-filament incandescent tail/stop lights on the panniers or on the sides of the license plate. This style of coupler gets its power from the vehicle's battery, so I figure it should have a low enough input impedance to not be noticed by the bike's lighting controller. Don't know if anyone's tried this, but it seems a lot cheaper than anything "purpose-built" for a GS...
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Last edited by saughblade; 27-Jan-2019 at 01:37 PM (817).
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post #8 of 23 (permalink) Old 27-Jan-2019, 01:46 PM (823) Thread Starter
'14 R1200 GS Adv "Freya"
 
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Quote:
Originally Posted by saughblade View Post
I'm in the same boat with my '06. Found an LED replacement light unit that's much brighter, but also about $90 and still just a single light in the stock location. I've been thinking about how the incandescent taillight on my bike works, and the way the controller will pulse-modulate the brake light if it senses the running light has burned out... I've found there are 1157-base LED bulbs on Amazon, etc., that claim to be brighter than standard incandescents but draw 1/3-1/3 the current... which leads to the idea of putting one in the standard taillight housing, and two or three more in auxiliary housings on the back of panniers, or maybe on pannier brackets (something to create a triangle rather than the single point of the stock light. Haven't gotten around to trying anything yet, though.

The other thing I've been thinking about is using a standard trailer lighting coupler like this one (currrently 25 bucks at Amazon) and a pair of dual-filament incandescent tail/stop lights on the panniers or on the sides of the license plate. This style of coupler gets its power from the vehicle's battery, so I figure it should have a low enough input impedance to not be noticed by the bike's lighting controller. Don't know if anyone's tried this, but it seems a lot cheaper than anything "purpose-built" for a GS...

This unit only draws Four (4) Watts - very unlikely that 4 watts will even be noticed by a CANBUS system.
Could easily be wired directly into an existing brake light circuit
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post #9 of 23 (permalink) Old 27-Jan-2019, 02:53 PM (870)
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Quote:
Originally Posted by bigjohnsd View Post
This unit only draws Four (4) Watts - very unlikely that 4 watts will even be noticed by a CANBUS system.
Could easily be wired directly into an existing brake light circuit
Ah.. didn't catch that. Well, looks like I have a project... once the temperature gets back up above zero!
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post #10 of 23 (permalink) Old 27-Jan-2019, 03:25 PM (892)
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On this subject and my lack of knowledge for CANbus, I found this helpful.

Motorcycle Info Pages - R1200GS Electrical stuff > CANbus - what's that?

The author has posted a large volume of r 1200 GS "how to" stuff and pages of specs and info.


I have this installed on my "05. Pertinent to anything I want to add on.



and a link to a BMW electrical diagram

https://www.r1200gs.info/R1200GS-WD2.pdf
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'05 1200 GS

Last edited by Southpaw; 27-Jan-2019 at 03:30 PM (896).
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