Thumper Club Forum

Technical => Bike Problems/Questions => Topic started by: Steve Lake on May 02, 2011, 07:04:52 AM

Title: LED indicators problem....
Post by: Steve Lake on May 02, 2011, 07:04:52 AM
OK I KNOW i can fix this.....but the solution escapes me at present.... I'm restoring/repairing and SRX after the ministrations of it's previous owner (there's a thread in 'Projects')
John (previous owner) had fitted LED indicators and an LED flasher unit, now, after some considerable effort not helped by the fact john (for some inexplicable reason) had replace the l/h switchgear with something unknown, i got the indicators working, BUT, when i try to wire in the repeater light i either get all indicators flashing, or i can get it working for one side ok.
it is almost certainly because the repeater bulb element draws too much current, i'm thinking i'll have to replace the repeater bulb with a LED.... or replace the flasher unit.... just seems strange... surely these aftermarket flasher units are built to cater for standard repeater bulbs?... all solutions/thoughts very welcome..
Title: Re: LED indicators problem....
Post by: themoudie on May 02, 2011, 12:12:20 PM
Aye Steve,

Your electrickery skills are far beyond mine and when these sorts of 'nuances' rear their heads, I come asking!  ;) I have a long time friend whom is very adept in the workshop and an electrician 'to boot'!  :)  However, he will ask all the questions that I have no idea of what the answers may be , afore diagnosing!  ??? The fact that the wattage of a bulb can queer the 'system', just drives me nuts!  >:( But not as much as plumbing!!!! >:( >:( >:( That really is a craft practised by  :-X :-X :-X :-X :-X, I loathe it, with avengance! >:( >:( >:( >:(

Stop afore a rant!!! ;)

I hope you get things sorted.

REgards, Bill.
Title: Re: LED indicators problem....
Post by: guest1155 on May 03, 2011, 07:33:19 PM
if the repeater was drawing too much current ( high resistance ) then the indicators would come on and stay on (i think) stopping the flasher unit from flashing. In theory there should be a link through the repeater from left to right indicators. Otherwise you would have one repeater for left and one for right. sound tome like the order of components has become jumbled up somehow and the repeater is causing a link from side to side. either that or the flasher unit is knackered :)

good luck.
Title: Re: LED indicators problem....
Post by: guest146 on May 03, 2011, 07:45:08 PM
You wont get LED bulbs to flash unless you put a resistor in the circuit. LED bulbs have very little resistance and cant  make the flasher unit  think it has a curcuit.

Regards Ken
Title: Re: LED indicators problem....
Post by: Steve Lake on May 03, 2011, 09:28:24 PM
problem is, the flasher unit is a proper LED flasher.... and the indicators work perfectly without the repeater in the circuit.
Title: Re: LED indicators problem....
Post by: johnr on May 03, 2011, 09:30:54 PM
but a relay for led indicators has the resistor built in. i think you need to look at how its all wired in to the indicator warning lamp. you need to have two feeds to the warning lamp and each of the feeds needs to have a diode in it to prevent the current from flowing back up the circuit of the opposite sides indicators. either that or have 2 warning lamps!
Title: Re: LED indicators problem....
Post by: Steve Lake on May 04, 2011, 06:00:08 AM
the 2 lamps is a distinct possibility.... the 2 diodes on the other hand isn't  :), using 2, you are in effect stopping current flowing both ways...
Title: Re: LED indicators problem....
Post by: Steve H on May 04, 2011, 06:59:19 AM
tthe 2 diodes on the other hand isn't  :), using 2, you are in effect stopping current flowing both ways...

The idea would be to have two feeds, one from each side, each fed through a diode. I haven't checked the wiring diagram but I would have expected the feed for the repeater to be wired before the switch, is this how you have it ?
Title: Re: LED indicators problem....
Post by: johnr on May 04, 2011, 04:12:38 PM
the 2 lamps is a distinct possibility.... the 2 diodes on the other hand isn't  :), using 2, you are in effect stopping current flowing both ways...

by 2 feeds i meant 2 live feeds to the warning lamp, each would have a diode to prevent operation of the left indicators from also triggering the right and vise-versa, the lamp would also have a common earth.
Title: Re: LED indicators problem....
Post by: Steve Lake on May 04, 2011, 08:12:05 PM
OK, you're both right of course...i'm going to have to check the wiring diagram and my (possibly suspect repair) at present i have the rather amusing situation of the repeater working correctly ...i.e. flashing in conjunction with the respective selection, and only the selected side flashing....but with the added bonus of the repeater continuing to flash when the indicators are cancelled  :D, the repeater (which is now a 12v 3 LED array) is connected to the switched side of the LED flasher.....this is not as per the standard wiring diagram..... oh what fun  :)
Title: Re: LED indicators problem....
Post by: themoudie on May 04, 2011, 10:11:31 PM
See!  :) Electrickery!  ??? There is no other polite way of explaining it, unless you use the water flow/pressure model, which I don't always find satisfactory.  ???

'Mystified'!  ???
Title: Re: LED indicators problem....
Post by: guest1155 on May 05, 2011, 08:27:57 PM
found this. hope it helps

http://www.peizhang.com/forfun/forfun_writings_smoke.htm
Title: Re: LED indicators problem....
Post by: Steve Lake on May 05, 2011, 09:23:04 PM
LOL...yes....thats been around for a while.....alwys makes me smile

As Andy230 says...   it's just not worth getting in a stew about..... i'll think about it for a few days whils I'm sorting out the rest of the wrwck....  summat'll come to mind
Title: Re: LED indicators problem....
Post by: themoudie on May 05, 2011, 10:10:57 PM
found this. hope it helps

http://www.peizhang.com/forfun/forfun_writings_smoke.htm

Thank you Skraatch.  ;D All is now clarified, like the smoke from a wiring harness! As usual the 'Prince of Darkness' is to the fore! ;D

My regards, Bill.
Title: Re: LED indicators problem....
Post by: 002 on May 20, 2011, 09:48:49 PM
The wiring should be as Yamaha Intended !
Yes..the indicators have been replaced...and the flasher unit to combat the lack of resistance in the LEDs.

So wire it up as intended...if you still have a problem put it back to standard.

Flasher unit maybe faulty....or bad earth.

Jethro
Title: Re: LED indicators problem....
Post by: Steve Lake on May 21, 2011, 10:38:25 AM
Thanks for all your efforts.
The solution (maybe not the right one), 2 superbright LED's pinched from an old head torch, connected in parallel (and in opposition), a 2K resistor attached to one end of the pair, then the whole caboodle made up so's it fits into the existing lampholder. thus, one led winks for l/h indication and, lo and behold, the other winks for r/h indication. (lot of trial and error with the resistor value, which involved various test diodes going pop!, if i'd used my 45 years of wwoking in electronics, and a multimeter i could probably have correctly worked out the value  :) ) also, to be correct in all respects, there should be a 1K resistor at each end of the diode array, but i didn't have any....ok ok... I know that 2 x2k in parallel = 1k, but then i wouldnt get it all into the lampholder.....