LED indicators

[Akzle]

did search=nothing=new thread.

so i see these LED indicator bizos. and i see these LED resistor bizos (for retro-fitting to standard incadescent bulb set ups)

now, the resistors specified are 50W 6 ohm and reckon to connect in parallel with the bulb. this strikes me as weird. it also says they generate a lot of heat and not to have near plastics.. but with a SFA duty cycle i wouldn't think it a problem??

i woulda thunk to connect a resistor in series with the hot lead. no?

incadescent bulb is, what? 15W, LED is .05, so doesn't draw enough to trip the flashy-majig. figuire (by math) that a 15w bulb has <10 ohm resistance. so the theory is to chuck a 10 ohm resistor in series.

what am i missing?!

[bogan]

Buy a flasher that is designed for LED indicators. Resistors just add unnecessary complexity.

[neels]

what am i missing?!
That you will drop too much voltage across a resistor in series to make the LED work, because the LED will already have a resistor in series to drop around 10 of the 12 volts supplied, and 10 ohm in series with just the LED would allow too much current and cook it.

Resistor in parallel is just to draw some more current to make the flasher unit work properly, or as above replace the flasher with an electronic one instead of thermal and problem solved. Don't think that works on my DRZ because the flasher is part of another box, so resistors it is.

[bogan]

That you will drop too much voltage across a resistor in series to make the LED work, because the LED will already have a resistor in series to drop around 10 of the 12 volts supplied, and 10 ohm in series with just the LED would allow too much current and cook it.

You'll probably find inside the indicator there is 4 LEDs in series, and a resistor which only drops a couple of volts.

[Akzle]

You'll probably find inside the indicator there is 4 LEDs in series, and a resistor which only drops a couple of volts.

can't remember what resistors are inside. starts with a 2# either x10 or x1000 and 5% 1/4W
.for looking.

i was gonna say... LEDs run at ~9v

anyhow. we'll see about all that. 8$ for a set of resistors, or 70$ for a flasher unit. i wonder.

[Voltaire]

I fitted led indicators to my Norton...and its postive earth to make matters more interesting.

I got the led indicators off Jonny Ballistics on TM after seaching widly even ebay but the post from the US is the deciding factor. the more leds the better and they have the all important E numbers for you testing station man.

The Electrician in me can't see the point of fitting resisitors ....its just another bodge.

I got an led flasher from AU ebay.. 12v. 0.02A to 20 amp...think it was $20 plus 12 for post....

then I see them in supercheap for $30-40 :facepalm:

no probs getting a WOF and they look more discreet than the hidious early 70's Lucas crap.

[bogan]

can't remember what resistors are inside. starts with a 2# either x10 or x1000 and 5% 1/4W
.for looking.

i was gonna say... LEDs run at ~9v

anyhow. we'll see about all that. 8$ for a set of resistors, or 70$ for a flasher unit. i wonder.

You must shop at a boutique LED flasher outlet store... those little fuckers are about 4 bucks on ebay (http://www.ebay.com/itm/Electronic-LED-Flasher-Relay-Fix-Turn-Signal-3-Pin-CF13-Fix-LED-Signal-Light-/181016720337?pt=Motorcycles_Parts_Accessories&hash=item2a256ff3d1&vxp=mtr)

[Haggis2]

I bought a relay at repco for $12 not that long ago that fixed my flash rate

[Akzle]

You must shop at a boutique LED flasher outlet store... those little fuckers are about 4 bucks on ebay (http://www.ebay.com/itm/Electronic-LED-Flasher-Relay-Fix-Turn-Signal-3-Pin-CF13-Fix-LED-Signal-Light-/181016720337?pt=Motorcycles_Parts_Accessories&hash=item2a256ff3d1&vxp=mtr)
i don't buy shit online, except TM. and that was for http://www.trademe.co.nz/motors/motorbikes/parts-for-sale/lights/auction-533430512.htm

I bought a relay at repco for $12 not that long ago that fixed my flash rate
sweet, i'll look into it. i haven't had a nosy at what's actually on the bike yet so we'll see.



The Electrician in me can't see the point of fitting resisitors ....its just another bodge.

I got an led flasher from AU ebay.. 12v. 0.02A to 20 amp...think it was $20 plus 12 for post....

then I see them in supercheap for $30-40 :facepalm:

no probs getting a WOF and they look more discreet than the hidious early 70's Lucas crap.
ayye ayye. i'll look into it. ta.

how's this for maths.
stock bulb is 5W, draws .28A, resistance of 42R (calculated) 48R (measured)
LED bulb has 3x 240R resistors visible (sealed unit), draws .02A calculated resistance of 600R

so if i wheck a couple of 5W, 47R resistors parrallel (basically the same as having a bulb connected) with teh LED bizos - i'm in business, jah?
the advo'd ones for retrofitment are 50W 6R. which confses me but i'm sure i'm still missing something.

[bogan]

Some stock bulbs are 21W, and you have your front and rear bulbs in parallel, so 42W total, so a 50W load resistor is in the ballpark at least. This is why I tell people to use LED flashers, then there is no issue matching old bulb wattage to load resistor to LEDs.

Tell you what, I'll sell you one locally for 20bucks, it'll save you buying from overseas. Though it'll likely take me 10-28 days to get it... :shifty:

[Akzle]

this f*ing thing is doing my head in.
switch tests OK.
switch to flasher unit tests OK. (ie flasher has no continuity when off and connects when switched to L+R)
then it gets interesting.

every wire for the existing indicators has continuity to ground. wherever the switch is and whether flasher is connected or not.
WTF?!?!

[Akzle]

Tell you what, I'll sell you one locally for 20bucks, it'll save you buying from overseas. Though it'll likely take me 10-28 days to get it... :shifty:

five bucks and a bag of chips.

[Akzle]

why google better search than KB?

http://www.kiwibiker.co.nz/forums/archive/index.php/t-139376.html?

[Owl]

You could always try an auto-sparkey?

I did that, he said "I know what will fix that", plugged in a Tridon HD12 relay and presto. $15 and been mint for the last 5 years.:D

[Laava]

, plugged in a Tridon HD12 relay and presto. $15 and been mint for the last 5 years.:D

Has been said on here many times. Best cure by far for flasher blues. I have this unit on 2 of my bikes no probs.

[Woodman]

I got leds on the front and incandescant bulbs on the back and a thermal flasher unit designed for leds works fine. Has done for a while now. Narva part number 62130bl from memory. The kwaka plusg is the same so it plugged right in.

[DEATH_INC.]

what am i missing?!
Where do I start..... :baby:

[Akzle]

okay. i so got a bit keen today. bought an HD12 relay, the LED 'cators i was lookin at.
now my HUD is dead. :facepalm: no revs (assume hall effect?) no speedo (still) fuel gauge shows up but not correct?, oil temp sensor... is f*ing odd any way. no GPI, high beam indicator.. blah.

and it's raining.
fuck it all.

[Akzle]

- replaced fuse, HUD back up
- put LED indicators in (drilled 3 holes more than necessary :doh:)
- put new hd12 relay in
- old relay was 2 pin. bike wiring diagram and wiring is for 3 pin which hooks into brake light switch.? so replaced with two pin hd12 rather than hd13.
- continuity on switch tests OK
- continuity to relay tests OK
- black at rear indicators measures ~3R to ground

les problemmes:
- brake lights are now (i'm fairly sure it worked before) anti-brake lights, ie on when lever is not pulled. off when pulled.
rear brake switch doesn't seem to do anything.
- indicators don't f*ing work.
-? hot at rear indicators measures ~10R to ground irrespective of bike running/not, relay connected/not.?
- indcators dont f*ing work.

[Tigadee]

Those are the exact same rear indicators as mine...

[neels]

Could be missing an earth somewhere, same as the disco lights you see on the back of cars when the indicators are turned on, things finding their way to earth through the lowest resistance bulb which in your case would be the brake bulb. Operating the switch would effectively put 12V on both sides of the bulb and make it go out.

Might be worth sticking an earth direct to the brake light bulb earth and see if that fixes it, otherwise it's fucked in which case I'll give you $5 and a bag of chips for it.

[Akzle]

Could be missing an earth somewhere, same as the disco lights you see on the back of cars when the indicators are turned on, things finding their way to earth through the lowest resistance bulb which in your case would be the brake bulb. Operating the switch would effectively put 12V on both sides of the bulb and make it go out.

Might be worth sticking an earth direct to the brake light bulb earth and see if that fixes it, otherwise it's fucked in which case I'll give you $5 and a bag of chips for it.

you smart arse mofo. i don't know whether to green or red. :pinch:

( i green, cos i'm green lyk dat)

[Akzle]

Those are the exact same rear indicators as mine...

i'd hope yours are in better nick!

(they did have 10W wedgies in em, FWIW)

[Laava]

- replaced fuse, HUD back up
- put LED indicators in (drilled 3 holes more than necessary :doh:)
- put new hd12 relay in
- old relay was 2 pin. bike wiring diagram and wiring is for 3 pin which hooks into brake light switch.? so replaced with two pin hd12 rather than hd13.
- continuity on switch tests OK
- continuity to relay tests OK
- black at rear indicators measures ~3R to ground

les problemmes:
- brake lights are now (i'm fairly sure it worked before) anti-brake lights, ie on when lever is not pulled. off when pulled.
rear brake switch doesn't seem to do anything.
- indicators don't f*ing work.
-? hot at rear indicators measures ~10R to ground irrespective of bike running/not, relay connected/not.?
- indcators dont f*ing work.

I see on your list that you have crossed off "dunny"
At least you have had success with something!

[Tigadee]

i'd hope yours are in better nick!

They definitely were! :laugh:


(they did have 10W wedgies in em, FWIW)

Hmmmm, why don't mine work?! Frustrating...

[neels]

you smart arse mofo. i don't know whether to green or red. :pinch:

( i green, cos i'm green lyk dat)
So did you try it, and did it fix it????

[Akzle]

So did you try it, and did it fix it????

i have not. it's PITA. i've been too busy smoking cigars, riding, eating and napping today...

[Tigadee]

You forgot 'shit, shower and shave'...

[Akzle]

You forgot 'shit, shower and shave'...

i did at least one of those!
i'll leave it to you to guess which, though :P