ke125 - blowing bulbs !!!

69chris · Trackday Trickster Joined: 10 May 2011 Karma :

hey guys, im having a spot of bother........again Laughing

im trying to get the mrs ke125 up together for her,
i fitted the loom, connected everything up and fired it up,
starts and runs great but when you switch on the lights they are really really bright - even at tick over, then with a lil rev they go into search light mode before blowing, the headlight/speedo/tach bulbs all blow together!!

iv had a search thru the wiring diagram and it would seem that the headlight gets it power directly from the mag so it would seem to me that the reg (rec ?) is ok

the battery is fitted but its proper dead - would that cause the bulb issue or is it more likely to be the mag playing up ???

thanks for any help guys Thumbs Up

unitynotsocri... · Banned Joined: 29 Jun 2011 Karma :

there may be a ballast resistor missing or damaged
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russell210276 · Renault 5 Driver Joined: 04 Jul 2012 Karma :

just do a simple check get a multimeter run the bike on idle check the voltage at the battery below your looking inbetween 12.5 and 14.5 volts then do the same at 3000rpm if anything like mine wen my regulator went i got 30 volts at the battery fried bulbs and battery

69chris · Trackday Trickster Joined: 10 May 2011 Karma :

69chris · Trackday Trickster Joined: 10 May 2011 Karma :

Raffles · World Chat Champion Joined: 14 Apr 2009 Karma :

69chris · Trackday Trickster Joined: 10 May 2011 Karma :

If your battery is giving a reading of 7V, how is it dead? Do the checks suggested above and see what readings you get whilst running the engine at various RPM's.[/quote]

ahh i wasnt being very clear, what i meant was although the batterys dead - proper dead, i have only fitted it so hopefulty nothing else will get cooked whilst im fiddling with it,
i measured 7ish volts at the battery leads whilst the bike was running (fast tickover), anything above that (2k rpm ish) just blows the bulbs !!!

Thumbs Up

Turkish · Crazy Courier Joined: 09 May 2012 Karma :

69chris · Trackday Trickster Joined: 10 May 2011 Karma :

thanks for the input guys,

it was the mag playing up, it got so bad that even taking a voltage reading was impossible as it was fluctuating so badly the multimeter couldnt keep up Laughing

i ended up testing for a current using a test light which, when some power was actually found, 'pulsed' the bulb from very dim to very very bright Laughing

got hold of a s/h mag and it seems to have done the trick

thanks again Thumbs Up