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  Topic Review (Newest First)
08-16-2019 10:29 AM
Jones427 I'm reasonably certain it'll reduce it down to the 9volts, if it's a flasher relay designed for led lights. That's all I replaced when I went with my led-s and they're all rated at 9volts.
08-15-2019 09:26 PM
Slower and Slower
Quote:
Originally Posted by Graham View Post
OK so apparently the issue is volts not watts, apparently the output for the electrics on the GSX-S is controlled from the dash, the output for the indicators is 12 volts, the GSXR indicators are 9 volts. Knowing next to nothing I stupidly bought 4 GSXR indicators assuming that they would be 12 volts. I've ordered a relay for LED indicators to get the correct flash rate
https://www.louis-moto.co.uk/artikel...701b271f4ae16b
Does anyone know if this will reduce the voltage or do I need to fit resistors to each indicator or could I somehow fit one of these step downs and if so where would I fit it?
https://www.ebay.co.uk/itm/Waterproo...UAAOSwcoFbmpJR
Sorry to ask dumb questions, if I'd realised that these indicators were only 9 volts I wouldn't have spend the money buying them, thanks for any advice I really do appreciate it.
Hi Graham,
I can't directly answer your questions. The whole of idea of LED lighting is to reduce power consumption dramatically compared to normal resistance type lamps.
So for the time that a series resistor is actually powered up is pretty small. The current consumed by a LED is small. Think of LED torch.
Heat is current squared multiplied by time. Not much current compared to the old bulbs.

You could if you wanted to and had a multimeter, connect a 9V transistor battery (a EverReady 916 or whatever makes 9 Volts) and measure the current.
Then using Ohm's Law, divide the current into the voltage to see the actual current. You can't measure the LED diodes with on Ohm's via the multimeter directly due to the nature of diodes.
As the wanted 9 V is 3/4 of 12V, the series resistance needed to drop the voltage across the diodes is 1/4 of your measured LED resistance obtained above.

Here's a video from the UK's Missenden Flier, who has a problem that could be the same as yours, and he discusses the resistor with one he bought and the relay which he eventually fitted to his Honda trail bike.

Rob.
08-14-2019 06:57 PM
Graham OK so apparently the issue is volts not watts, apparently the output for the electrics on the GSX-S is controlled from the dash, the output for the indicators is 12 volts, the GSXR indicators are 9 volts. Knowing next to nothing I stupidly bought 4 GSXR indicators assuming that they would be 12 volts. I've ordered a relay for LED indicators to get the correct flash rate
https://www.louis-moto.co.uk/artikel...701b271f4ae16b
Does anyone know if this will reduce the voltage or do I need to fit resistors to each indicator or could I somehow fit one of these step downs and if so where would I fit it?
https://www.ebay.co.uk/itm/Waterproo...UAAOSwcoFbmpJR
Sorry to ask dumb questions, if I'd realised that these indicators were only 9 volts I wouldn't have spend the money buying them, thanks for any advice I really do appreciate it.
08-14-2019 05:13 PM
Jones427 Alright I figured where I got the one I have from.

https://www.amazon.ca/AUDEW-Motorcyc.../dp/B011O49RHC

It may be available from The American site, not sure. But typing "2 pin signal relay" in that Google machine, top result is

https://www.amazon.ca/Motorcycle-Sig.../dp/B01EUDH320

Which I think has the same technical specs as the one I have that's worked like a charm for over a year now 🙂. Anyways those are absolutely what I recommend installing if you do an led signal swap.
08-14-2019 10:24 AM
Jones427 Maybe if you're running 500 megawatts through them! Unless you change the wiring harness, or add an inline fuse, to the relay, you're wasting that extra energy. You'll still have the full 12v or whatever spec heading into the relay, and only 9 coming out, so adding a resistor is the same. The variable led intended relays just have a variable resistor built in... And even if you add that new fuse? Well that's causing heat! You're computer or phone, tablet whatever, is creating more heat than that LED set up, just reading this!

And... If that was a sarcastic post, whoops. Over my head. If not? A little too pedantic, and hypocritical with that global heat 😅
08-14-2019 12:06 AM
blue72beetle ^^That really only matters for bulbs that are constantly on. Turn signals are only on for a fraction of the time. The real reason everyone wants LED signals is cause they look cool.

LOL, turn signals cause global warming, and waste gas, give me a break.
08-13-2019 07:16 PM
hugojose
Quote:
Originally Posted by Jones427 View Post
You can use a resister on the standard relay, and get the same result,t.
No,....only on the surface, …..the resistors defeat the main advantage of LEDs,...... efficiency. The incandescent stock bulbs consumes about 75% of its energy in heat, not light, because they are RESISTORS, like the heating coils in a electric stove.


LEDs by themselves, are the opposite, they run cool, consuming only about 25% of energy in illumination. If you install resistors, then why bother with LEDs??…. The resistors will bypass to ground as much or more current than the stock incandescent bulb wasting all that energy in HEAT, just like the stock incandescent. …..of course the mechanical relay is happy,....as it sees all that energy going to waste warming an already too-hot planet, and costing your money in fuel....yes, …...that waste cost you...plus the cost of the LEDs.
08-13-2019 10:57 AM
Graham Sorry I think the issue may be the wattage difference not volts as both bikes should be 12 volts, doh!
08-13-2019 10:31 AM
Jones427 You can use a resister on the standard relay, and get the same result, slower signal and not burning out, but I'm not sure @what ohm. I found out easier to just buy a variable relay. When I have a few more minutes later today I'll try and find a link of what I have. It's got a little variable output, so it shouldn't fry the led. All you need is a tiny flathead, and to turn it.
08-13-2019 09:50 AM
Graham Sorry to resurrect and old thread but I've bought a set of 2018 GSXR1000 LED indicators hoping to fit them to my GSXS1000F, I'm aware I'll need a different relay but apparently somebody else who tried fitting these fried the indicators because the standard indicators are 12 volt and the LED's are 9 volt, although they used the stock relay.
So my question is will the fitting of a relay for LED indicators be sufficient or will it still feed 12 volts to 9 volt indicators and fry them, if so are there load resistors I can fit and which ones would I need?
Any advice greatly appreciated.
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