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Tip Over Wing LED's ( ST1100 ) *

Started by KoTAOW, April 06, 2012, 03:34:01 PM

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Submitted by Terry Huusko, aka AZ711, STOC #7592
Original article can be found here:  ST1100 - Tip-Over Wing LED's


Tip Over Wing LED's ( ST1100 )

A couple of months back, my brother-in-law found instructions on line for installing LED’s on the tip-over wings on his BMW 1200LT. These LED’s would function as running lights and also operate in “wig-wag” fashion with the stock turn signals. We went ahead and installed those, and both of us were quite pleased with the results.

I have taken those instructions (which can be found here) and used them as a guide to install LED’s on my ST1100 tip-over wings. I used the template the document supplies on page 18 for the layout of 16 3mm yellow LED’s. Because BMW uses a two wire turn signal/running lights configuration, compared to the three wire configuration used by the ST, I configured the forward facing 12 LED’s to operate as running lights, and the rearward facing 4 LED’s as turn signal indicators. Additionally, I also made two other variations from the instructions for my installation. Instead of using a load resistor on each LED, I used this LED Calculator to configure the parallel/series circuits shown below.

12-LED Layout

4-LED Layout

Approximately $20.00 in parts required for both sides.

Additional Part Information:
Yellow LED's    Qty. 1-9  $0.60 each    10-99  $0.54 each

The RL3-Y4545 is 3mm through hole LED. This yellow LED has a wavelength of 588nm at a millicandela rating of 4,500mcd.
It has a 45 degree viewing angle with a clear lens.

16 LED's needed per side.

180 ohm, 1/4 Watt Resistor's   Package of 25 $1.65 each

The QW118-25 NTE is a metal film, flameproof resistor, 1/4 Watt, 180 ohm, 2%, axial lead.

4 RESISTOR's needed per side.


Also, instead of filling the tip-over wing with silicon for insulating purposes, I used Silicone Conformal Coating. Using the conformal coating would allow for easier removal and repair if an LED or two should happen to fail.

After installing the LED’s in the tip-over wings, I used three pin (1-running lights, 2-turn signal, 3-ground) male/female Molex connectors for the disconnect needed to remove the tip-over wings from the bike. I installed shrink tubing on the wires and routed them along the frame, following the factory wiring harness, and made the final connections at the front, mirror mounted turn signals.

Below are some photos showing the various stages of the installation and the final result. Please feel free to contact me for any additional information or questions you may have. Also, if there is anyone out there who would like to do this, but is uncertain of their soldering skills, please drop me a PM and I would be happy to work out a way that I could assist you.


Thank You again for your contribution Terry Huusko, aka AZ711, STOC #7592