anyone electically inclined? 650 content.

warren3200gt · #1 PostAuthor: **warren3200gt** » Tue Sep 13, 2016 9:12 pm

Anyone electrically inclined and can answer this question I've posted on the 650 forum? http://z650.proboards.com/thread/1981/r ... ht-failure

LeeJackson · #2 PostAuthor: **LeeJackson** » Tue Sep 13, 2016 9:15 pm

Warren, looks like you can't view it unless your a member of that site?

warren3200gt · #3 PostAuthor: **warren3200gt** » Tue Sep 13, 2016 9:18 pm

Brake light idiot light comes on when you brake, flashes when the brake light bulb is blown, so all as should be.
Swop the oem bulb system for single LED and idiot light is on all the time. So i figure the brake light failure unit uses the resistence in the oem bulb system somehow and allows the idiot light on and off when it should. Measure the resistance of the oem bulb as 35 ohms in situ and 5 ohms on the bulb alone. Add in a 35 ohm resistor in the live before the LED but no change, LED is on all the time. Tried 60 ohm, no change, tried 150 ohm no change.
The only way to get an LED to work properly that I can find is to run the oem bulb and the LED in parrallel with the oem bulb tucked out the way and painted black so it doesn't show when the brakes are applied.
anyone know how it can be done without the oem installed.?

warren3200gt · #4 PostAuthor: **warren3200gt** » Tue Sep 13, 2016 9:18 pm

Cut and pasted from the 650 site.

thanks Lee.

#5 PostAuthor: **KeithZ1R** » Wed Sep 14, 2016 6:28 am

try putting your resistance in parallel wiv the bulb

warren3200gt · #6 PostAuthor: **warren3200gt** » Wed Sep 14, 2016 11:22 am

Hi Keith, everything I know about electrics says that shouldn't work, electricity taking the least path of resistance and all that? But I'm no sparky!

ZedHead · #7 PostAuthor: **ZedHead** » Wed Sep 14, 2016 1:33 pm

As Keith said..

Ohms Law - I=V/R

By putting the resister in parallel you lower the total resistance and increase the total current load through the switch. The voltage and current to the LED are unchanged.

Z1parR · #8 PostAuthor: **Z1parR** » Wed Sep 14, 2016 2:05 pm

See , there are some clever buggers on here :up

Though you wouldn't think so to look at them :wink:

warren3200gt · #9 PostAuthor: **warren3200gt** » Wed Sep 14, 2016 2:18 pm

ZedHead wrote:As Keith said..

Ohms Law - I=V/R

By putting the resister in parallel you lower the total resistance and increase the total current load through the switch. The voltage and current to the LED are unchanged.

Makes no sense to me but I'll give it a go, thanks.

#10 PostAuthor: **KeithZ1R** » Thu Sep 15, 2016 6:29 am

warren3200gt wrote:Hi Keith, everything I know about electrics says that shouldn't work, electricity taking the least path of resistance and all that? But I'm no sparky!

Its a "black art at best"

ZedHead · #11 PostAuthor: **ZedHead** » Thu Sep 15, 2016 7:53 am

KeithZ1R wrote:
warren3200gt wrote:Hi Keith, everything I know about electrics says that shouldn't work, electricity taking the least path of resistance and all that? But I'm no sparky!

Its a "black art at best"

And there was me thinking you knew what you were talking about Keith :shock:

ZedHead · #12 PostAuthor: **ZedHead** » Thu Sep 15, 2016 7:58 am

Z1parR wrote:See , there are some clever buggers on here

Though you wouldn't think so to look at them

A little less of the "buggers" talk Geoff

30 years in electronics and i can still nerd with the best at my age :??

#13 PostAuthor: **KeithZ1R** » Thu Sep 15, 2016 7:21 pm

ZedHead wrote:
KeithZ1R wrote:
warren3200gt wrote:Hi Keith, everything I know about electrics says that shouldn't work, electricity taking the least path of resistance and all that? But I'm no sparky!

Its a "black art at best"

And there was me thinking you knew what you were talking about Keith

I do,but its still a black art :lol:

anyone electically inclined? 650 content.

anyone electically inclined? 650 content.

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