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Discussion Starter #1
I would like to upgrade my topbox OEM brake light to flash when the brake is applied. Anyone have technical advice on how to accomplish this?



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There are several options available. If you're ONLY interested in making the top box flash I'd go with the Skene IQ-260. The 260 will convert the top case light to a run/brake/flash when braking and led's will flicker all the time. For a few dollars more the IQ-260-D will do the same as the 260 but add flashing when you decelerate.

https://www.skenelights.com/online-store/IQ-260-Tail-Brake-Light-Controller-p80153945

https://www.skenelights.com/online-store/IQ-260-D-Rear-Visibility-Controller-wth-Decelerometer-p83618625

Duane
 

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With the Skene, you can also make the bike’s tail light flash with the top box and you can add additional skene lights at the license plate that will also flash.
 

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I went with a very inexpensive GS-100A module that someone else on the forum had used. Easy-peasy and works great for the eye catching quick flash when brakes are applied. Not fancy, no turn indicator, just 4 quick flashes, 4 slow flashes, then solid brake light. It tucks in right behind the factory brake light insert in the top box.

https://www.amazon.com/iJDMTOY-GS-100A-Strobe-Controller-Clearance/dp/B00N44WLXS?SubscriptionId=AKIAJ2F6RDUSIYCWQMFQ&tag=sa-b2c-new-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B00N44WLXS
 

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Discussion Starter #7
Skene or Viz-Tech will do the job.

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With this post am I correct in assuming that if I add a plug and play unit such as the Viz-Tech it will have the same effect on the topbox light as the bike main unit. In other words it will effect both units the same?


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I went with a very inexpensive GS-100A module that someone else on the forum had used. Easy-peasy and works great for the eye catching quick flash when brakes are applied. Not fancy, no turn indicator, just 4 quick flashes, 4 slow flashes, then solid brake light. It tucks in right behind the factory brake light insert in the top box.



https://www.amazon.com/iJDMTOY-GS-100A-Strobe-Controller-Clearance/dp/B00N44WLXS?SubscriptionId=AKIAJ2F6RDUSIYCWQMFQ&tag=sa-b2c-new-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B00N44WLXS


How did you wire it in? On the wires leading into the brake/light insert?


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With this post am I correct in assuming that if I add a plug and play unit such as the Viz-Tech it will have the same effect on the topbox light as the bike main unit. In other words it will effect both units the same?


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Yes, it includes a wire to connect to the top box to flash both.

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Clearwater Lights have brake lights which can be tied into the top case light. More expensive than some of the options listed but if you plan on Clearwater Lights of some kind for the front anyway it might make sense.
 

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How did you wire it in? On the wires leading into the brake/light insert?


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I cut the two wires on the light, downstream of the factory bike-to-light quick connect if you will, and connected two wires in and two wire out to the module. I had no instructions on which light wire was to go to black and red of module, but it was easy to test; wire it one way and pull hand brake. If it flashes, that's correct. If not, reverse them. There are several vendors of this GS-100A unit. I simply linked the first Amazon one that came up. There may be even cheaper deals than $12 each. For a simple light flash addition, I don't think it comes cheaper or easier. Best of luck.
 
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With this post am I correct in assuming that if I add a plug and play unit such as the Viz-Tech it will have the same effect on the topbox light as the bike main unit. In other words it will effect both units the same?

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That is correct
 

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Discussion Starter #15
Clearwater Lights have brake lights which can be tied into the top case light. More expensive than some of the options listed but if you plan on Clearwater Lights of some kind for the front anyway it might make sense.


Thank you for this post. I happen to have Clearwater lights on my bike and was able to use the Billy light output to control the topbox brake light flash as I wanted.

I would also like to thank everyone who replied to my post. All were very helpful and informative. This is a great forum and I enjoy it very much.


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I bought one of these; https://www.ebay.co.uk/itm/Vehicle-Car-GS-100A-LED-Brake-Stop-Light-Strobe-Flash-Module-Controller-Box-UQ/202516514230 Not expensive. I wired it in by soldering BMW plugs on either end, so not cutting the harness. As mentioned elsewhere there is plenty of room behind the fitting. It does not upset the CanBus.
For the price I can't fault it.
I picked up a couple of these on Amazon. Where did you get the BMW plugs? Is the plug joint under the trunk brake light bezel?
 
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