Indercator

[Mattzxr750]

okay, i got some small indercator for the rear of my bike and im having problems with getting them going.

when the new indercators are plugged the lights just stay on, same as when only the front one is plugged in.

i went and talk to the shop about them (they were very helpful) they said to put in a resistor to draw more currant (20 ohm). so i did. hooked them up and all that happens is the light gets a little dimmer.

Do i need a bigger resistor? or is it that my bike just cant run them?

the old light is 21w and the new is 6w

[MidnightMike]

Maybe it would help if you could spell indicators?

sorry

couldnt help myself

[Mattzxr750]

yeah me england not good

[Jonathan]

P = V^2 / R
Someone work out R

[Jonathan]

Which is useless because I changes with P also... So maybe you want a resistance that keeps the current the same as before... Who knows more about physics?

[avgas]

just do the resistance difference between the 2 bulbs. I and V need to be kept the same i think

[Sketchy_Racer]

If you find your Flasher unit, there should be a Draw Current on it. That is how much draw that the circuit needs to draw from teh unit to make it flash.

Or jsut go buy yourself a adjustible flasher unit?

[Jonathan]

At 21W the bulb draws
I=P/V
=1.75
current

At 6W it draws 0.5
That's 1.25 less

to draw that 1.25 you need a
R=V/I
=12/1.25
=9.6 ohm resistor

Try 10ohm resistance

(Please correct me if I am wrong!)

[Jonathan]

...per bulb.

[Mattzxr750]

okay i tryed the 10ohm didnt work(tryed everything from about 10 to 50).

just going to track done the flasher unit and see if there any info in to

[Mattzxr750]

Okay, the flasher had nothing on it.

so i got out the muitimeter and cheack the ohms of both lights and here what i came up with:

Old light 5.8 ohms
New light 2.4 ohms
---------
differents 3.4 ohms

so if i got a 3.4 ohm resistor and put it in would that solve the problem?

[Mattzxr750]

Update: im really confused now i just tested the old lights and the reading is coming up as 0.8 ohm. i just dont now what to do

[Jonathan]

Are you sure you connected the resistors in the right place (one in parallel with each indicator)?

There was another thread on this:
http://www.kiwibiker.co.nz/forums/sh...ad.php?t=30275

May be different situation from LED indicators though...

[Mattzxr750]

problem solved. if anyone has this problem. go to supercheap and buy a 12v non-load flasher unit and replace your one with that. it cost about $5. and works great

[degrom]

Yes... Was it hard to fit the new unit? I really need to fix my bike in the next few days... If I understand correct this non-load unit will also work it you want to fit Led's in the future. (Not dependent on heat to make it flicker...)