Anyone know if I can tap into 12v DC? - KTM 250 EXC

[Blue_SV650S]

Not really sure if the bike runs AC or DC. I can see it has a voltage regulator, but not a rectifier ... so I am thinking it is probably AC ... however, the horn must be DC right?!?!!?

Basically I want to wire up a sat-nav to my 2000 KTM 250 EXC 2t and I need regulated 12v DC to tap into ...
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The purpose of life is to fight maturity.

[drzsta]

This maybe your solution https://trailtech.net/media/instructions/lights/stators/010-ELV-45.pdf
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Current Bikes - BMW S1000RR ‘17 & KTM 690 SMC-R ‘12

[Blue_SV650S]

[monty]

does it have a battery if so fit a car fag lighter to the battery and power it that way.

all bikes are a/c as the power is different depending on revs
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Gilera Nexus 500
Its a scooter get over it!!!

[Blue_SV650S]

[G]

Pretty sure it is AC, got a feeling you can get DC kits from place like baja designs or something maybe, but doubt yours would have one.

No reason you can't have a horn AC, being a very simple 'buzzer' it's probably even easier to make in AC!

[oldpink]

Hmm there must be DC at some point as you can't charge a bettery (DC) from an AC source
____________________
I have become comfortably numb

Theory & hazard 24-may 2016, CBT 8th June 2016, MOD 1 2nd Aug 2016 Mod 2 2nd-Nov 2016 - Current bike CBR 600 RR

[G]

[oldpink]

yes a battery would be req
anything eletrical outside the engine on a bike, lights etc req DC
so there would be a rectifier and a regulator
____________________
I have become comfortably numb

Theory & hazard 24-may 2016, CBT 8th June 2016, MOD 1 2nd Aug 2016 Mod 2 2nd-Nov 2016 - Current bike CBR 600 RR

[G]

You do not require a battery for a 'bike'* to run.
As witnessed by home illuminations, lights can work off AC too .

* Of course many do, ie many with just electrical start, with fancy electronics and FI etc.

[Blue_SV650S]

The wiring diagram states the horn as DC ... it also has a 'capacitor' in the circuit ... wonder if I could tap DC off the capacitor!!?
____________________
The purpose of life is to fight maturity.

[Charlie]

A capacitor becomes almost like a block at high frequency IIRC. A singular diode and a capacitor could be used to make a half wave rectifier... which could provide DC with a massive ripply voltage...
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Past: Honda x8rs, Honda City fly, Honda Hornet 250, Honda VFR750, Yamaha xt600e.
Current: Honda CBR929RR & Yamaha XT660Z Tenere

[Charlie]

If you can give me a copy of the circuit diagram I could have a look and see what I can make of it. I am not that good at electronic circuits though.
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Past: Honda x8rs, Honda City fly, Honda Hornet 250, Honda VFR750, Yamaha xt600e.
Current: Honda CBR929RR & Yamaha XT660Z Tenere

[Blue_SV650S]

Fill ya boots!!

KTM 250,300,380 SX,MXC,EXC Owners Manual GER
https://www.megaupload.com/?d=DEINYWZ3

KTM 125,200 99-03 Engine Repair Manual ENG https://www.megaupload.com/?d=UTORMP65
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The purpose of life is to fight maturity.

[Charlie]

The english version doesn't work... not as much detail as I was hoping in the german one.
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Past: Honda x8rs, Honda City fly, Honda Hornet 250, Honda VFR750, Yamaha xt600e.
Current: Honda CBR929RR & Yamaha XT660Z Tenere

[Blue_SV650S]

[Charlie]

The english link doesn't work though, says the file in not available... might be more help.

You need an oscilloscope! Could probe the horns supply and see how DC it is...
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Past: Honda x8rs, Honda City fly, Honda Hornet 250, Honda VFR750, Yamaha xt600e.
Current: Honda CBR929RR & Yamaha XT660Z Tenere

[Blue_SV650S]

[oldpink]

my german is shit but on page 11-5 there is an eletrical chart code to accompany the wiring diagrams
according to that the 99 250/380 has a rectifier and the diagram shows DC
and I'm assuming if it still has a horn there will be 12v DC wiring for the lights etc
a cheap test meter will tell you if you have AC or DC and the voltage
and if you know how to use the meter measure the current (Amps)
as you may need to have a certain rating to run your satnav without damaging it or not
delivering enough current for it to work

this may help its a link to a 2003 250exc with the full wiring diagram
and good info on the other eletrical system
https://www.mediafire.com/?o3nrd04oiyj

G
I know that house lights use AC but as far as I'm aware all modern bikes / cars run DC for the lights etc
and as his bike is the EXC unless its been stripped it should have a battery
____________________
I have become comfortably numb

Theory & hazard 24-may 2016, CBT 8th June 2016, MOD 1 2nd Aug 2016 Mod 2 2nd-Nov 2016 - Current bike CBR 600 RR

[Blue_SV650S]

[oldpink]

I stand corrected, yes your model does have AC

found a 1999 - 2003 manual in english
https://moto.tt.free.fr/explorer/KTM_Manual_engine_250_380_1999_2003_english.pdf

the wire diagrams are there
____________________
I have become comfortably numb

Theory & hazard 24-may 2016, CBT 8th June 2016, MOD 1 2nd Aug 2016 Mod 2 2nd-Nov 2016 - Current bike CBR 600 RR

[G]

As above, poke a multimeter around the place.

[Blue_SV650S]

[oldpink]

I think your model is the diagram on page 11-7
if so It looks like its all AC as you say theres no rectifier so one would be req to get your satnav to work
____________________
I have become comfortably numb

Theory & hazard 24-may 2016, CBT 8th June 2016, MOD 1 2nd Aug 2016 Mod 2 2nd-Nov 2016 - Current bike CBR 600 RR

[G]

Might it not be worth just getting an extra battery to cover that?
As I said the other day, was going to make something, maybe with 10x AA batteries in a little holder to power it for the push bike. May be a load less hassle - think I've got all the needed stuff, so may give it a go this week, though as I said, think I may have blown my 12v road angel adaptor .