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Old Streetfighter Motorcycle Forum Post 05-21-2020, 02:21 AM   #261
Gixooligan
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Default Re: 1997 GSXR 750. Blackheart.

Quote:
Originally Posted by Mongoose View Post
did more digging and looking... groms use AC for their lights.. not a dc circuit at all..
I may have to get creative here. I'm considering just removing the existing boards and replacing them with a different 12VDC LED. It may make this quite a bit simpler.

Quote:
Originally Posted by 93gsxr View Post
Thinking about doing the same. What dimensions tubes did you use? Link for the rubber o-rings? Thanks!
Here's everything I used:

Pipe: https://www.ebay.com/itm/2-1-2-OD-x-...5/150678528388

Large O-Rings (for the top of the forks): https://www.amazon.com/gp/product/B0051XZ0D8

Smaller O-Rings: https://www.amazon.com/gp/product/B000FMUTCC

I did chamfer the inside edge of the tube as well; I definitely recommend doing that to help things seat tightly.
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Old Streetfighter Motorcycle Forum Post 05-21-2020, 11:42 AM   #262
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Default Re: 1997 GSXR 750. Blackheart.

Quote:
Originally Posted by Gixooligan View Post
I may have to get creative here. I'm considering just removing the existing boards and replacing them with a different 12VDC LED. It may make this quite a bit simpler.



Here's everything I used:

Pipe: https://www.ebay.com/itm/2-1-2-OD-x-...5/150678528388

Large O-Rings (for the top of the forks): https://www.amazon.com/gp/product/B0051XZ0D8

Smaller O-Rings: https://www.amazon.com/gp/product/B000FMUTCC

I did chamfer the inside edge of the tube as well; I definitely recommend doing that to help things seat tightly.
Depending on what popped you miggt just be able to bypass all the bs and run a resistor to get 12 volts to work or w/e.. Would be easier to drive the exisiting leds than to make a new board.. Maybe hopefully lol
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Old Streetfighter Motorcycle Forum Post 06-16-2020, 01:33 AM   #263
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Default Re: 1997 GSXR 750. Blackheart.

And I'm back. After some research and playing with the existing board, I decided that I wasn't going to invest any more effort into getting the provided LEDs to work. No matter, we can do better. So for you all, here's a mini-tutorial on retrofitting you 2020 Grom headlights with newer, more badass LEDs.

First step. Open the headlight.

We need to gain access to the boards first thing. The GROM headlight doesn't have any bolts holding the housing on. It's tabs and sealant. To loosen the sealant you need to heat it up. In my opinion the easiest way to do this is in the oven. Set your oven to 300 degrees. You'll bake the headlight for 6 minutes.



You'll be putting the headlight on a center rack. Cover the bottom of the pan and your lenses with soaked paper towels. This will keep the temp down and keep things from melting or sagging.



After 6 minutes you're ready to open the headlights. They sealant should be relatively pliable. If it isn't put them in for another minute or two. Gently pry the tabs off (4 in total), and then use the screwdriver to coax the lens up. Be VERY careful as you lift to not get any sealant on the headlight reflectors.



Here is what we're left with. There are 5 bolts holding the housing in. Carefully remove those and you'll be able to access the circuit boards.



And here are the boards removed with their brackets. Don't worry too much about the wires or other electronics... they're not long for this world.



Before we go on, we need to talk about what will replace the current setup. As other have pointed out, the Grom uses a strange A/C power setup, driven by the rectifier. That won't work if you need 12VDC. Enter LED supply. I opted to replace each of the 4 LEDs with the Cree XLamp XM-L2, paired to two BuckBlock LED Drivers. I'm using one driver for high beam, and the other for low beam. You can find those here:

LEDS: https://www.ledsupply.com/leds/cree-xlamp-xm-l2-leds

Drivers: https://www.ledsupply.com/led-driver...-dc-led-driver

LEDSupply support was very helpful. You could go more wild if you wanted even more output. This setup is already blinding though, and more than adequate for my needs. I opted for the 4k LEDs. Each LED power input max is 3000mah; I got the 2100mah BuckBlocks, so the LEDs aren't being taxed at all.

Okay, back to the build:

I needed to get rid of the old LEDs. This is an easy task with a drill bit. Be careful to keep things centered on the existing LEDs. We want to position the center of our new LEDs on the old ones so that we don't compromise the beam pattern of the headlights.



I used a stepper bit and cut my pilot holes out completely, matching the size of the hole to my LED's board diameter.



I backed the holes with aluminum sheet. This is VERY important; these LEDs need a heat sink for maximum life. I purchased some thermal paste, and once affixing the aluminum to the board with epoxy (roughen the board and aluminum with sandpaper to get a good bold), I used the thermal paste on the back of the LEDs and pressed them hard into the aluminum heat sink.



With the LEDs in place I used some high temp RTV to dot around the mounting points on the LEDs to help keep them in place. Additionally I soldered the BuckBlocks into place. The LEDs can be wiring in series from the BuckBlock.



I affixed my BuckBlocks in place with Velcro. Note that this is NOT my final fitment. It's pretty tight in the housings, and I ended up placing them left and right of the reflectors. They are not visible with the housing in place.



Sadly I don't have an image of this, but I soldered the BuckBlock grounds together, and extended both positive leads. Then I drilled out the center of the old plug assembly and fed the wires through there. Finally I put the wires into my new headlight harness clip such that the bottom light was the high beam and the upper is the low beam (I actually wired my low beam into my DRLs so that it's on all the time). To retain water tightness I filled the hole I drilled with RTV to provide a flexible, watertight seal.

I'll show pictures of the finished product this coming weekend. Suffice it to say these headlight are now BLINDING. I'll need to make to to aim them appropriately or I'll really be annoying oncoming drivers.

NEXT UP: I finished my now Bluetooth ignition. If you'd like to see a breakdown of that build let me know.
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Old Streetfighter Motorcycle Forum Post 06-16-2020, 01:44 AM   #264
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Default Re: 1997 GSXR 750. Blackheart.

nice job sir
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Old Streetfighter Motorcycle Forum Post 06-16-2020, 03:37 AM   #265
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Default Re: 1997 GSXR 750. Blackheart.

Very nice work! Please show us everything including the bt ignition!

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Old Streetfighter Motorcycle Forum Post 06-16-2020, 10:35 AM   #266
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Default Re: 1997 GSXR 750. Blackheart.

Show me the light!!!!!!!!!!!!!! Excited to see the output of this thing.

Thanks for the write up!

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yell, "Built not bought mother fucker!" in there face and then spit on their bike and walk off.
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Old Streetfighter Motorcycle Forum Post 06-16-2020, 10:54 AM   #267
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Default Re: 1997 GSXR 750. Blackheart.

Great job!
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Old Streetfighter Motorcycle Forum Post 06-16-2020, 02:41 PM   #268
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Default Re: 1997 GSXR 750. Blackheart.

rept for the info!

Quote:
Originally Posted by mcantar View Post
They can ban, outlaw, and restrict whatever they please. I'll keep doing whatever the fuck I'm doing, because I don't really give a shit. The only thing that will change is that I'll be breaking their made up bullshit rules while doing it, and I'm comfortable with that.

My Build http://www.customfighters.com/forums...d.php?t=118649
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