Electrical wiring

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K4rel

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KTM
KTM 620 LC4 1994
Hi,

I have bought/build up a KTM 620 from '93. There are parts I think from later models.
The bike is running but I still need to do the wiring.
It's the bike without battery. Does anyone know how you install and attach the wiring?
I also don't have any electronic switch. Only the kill switch. So I guess it's missing??

Thanks in advance...
 

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Thats a model with SEM ignition then. Runs with direct AC from ur alternator to coil/cdi combination underneath ur tank. Killswitch connects Ur ground to ignition and kills engine.

The part U mentioning is for the 12V DC part.

The grey box, the regulator makes about 12V DC. The condensator makes more nicely 12V DC out of it. U need this for indicators, horn, lights. U could attach a simple switch that connect/disconnect ur 12V DC circuit. Or not. 12V while running engine and 0V with engine off. :)

Wiring diagram for old models helps.

Alternator should have blue and yellow to regulator. Redwhite is + Brown is -. Redwhite to + of condensator, Brown to -. From there u can connect ur devices.

KTM ER LC4 600 BJ.93 Schaltplan

Hallo liebe Leute, ich bräuchte mal eure Hilfe, hätte da zwei Fragen: 1. Meine KTM ist laut Schein das Modell KTM ER LC4 600 EZ. 30.03.1993 a) ist die er lc4 600 dieselbe wie die lc4 600 EGS, denn ich finde leider nichts im netz zu ER LC4 600, sondern nur zu der EGS, besonders beim Schaltplan...
www.ktm-lc4.net
 
klx schrieb:
Thats a model with SEM ignition then. Runs with direct AC from ur alternator to coil/cdi combination underneath ur tank. Killswitch connects Ur ground to ignition and kills engine.

The part U mentioning is for the 12V DC part.

The grey box, the regulator makes about 12V DC. The condensator makes more nicely 12V DC out of it. U need this for indicators, horn, lights. U could attach a simple switch that connect/disconnect ur 12V DC circuit. Or not. 12V while running engine and 0V with engine off. :)

Wiring diagram for old models helps.

Alternator should have blue and yellow to regulator. Redwhite is + Brown is -. Redwhite to + of condensator, Brown to -. From there u can connect ur devices.

KTM ER LC4 600 BJ.93 Schaltplan

Hallo liebe Leute, ich bräuchte mal eure Hilfe, hätte da zwei Fragen: 1. Meine KTM ist laut Schein das Modell KTM ER LC4 600 EZ. 30.03.1993 a) ist die er lc4 600 dieselbe wie die lc4 600 EGS, denn ich finde leider nichts im netz zu ER LC4 600, sondern nur zu der EGS, besonders beim Schaltplan...
www.ktm-lc4.net
Zum Vergrößern anklicken....
Thanks a lot for the info!!
 
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Wertungen: klx
I made a schedule about my wiring. It's exact how you described.
You think it's possible to add blinkers, head light, tail light and operation switch?

I don't even know what bike I own. I think a 620 from 1993 but I am not sure...
 

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In 93 there was no 620, this came only in 94. If you have a 93 LC4, the probability is high that it is a "600 "er with 553cc.
There is a number stamped on the cylinder head. And the engine number might help. Means you have the oil filter sitting behind the engine, oil in the frame chest tube, no balance shaft and no battery. The manifold is multi-piece.

Your sketch is very good. You have already prepared the DC part well. Now you can use this switch

Suchergebnis

www.louis.de www.louis.de
to switch off the 12V before starting the engine and switch it on after starting the engine.

The rest of the 12V electrics you can wire from your + and - according to the wiring diagram. Do you have all the elektrical parts? Or do you want to start from 0 with buying new turn-switches etc.?
 
Well... I do think it's a 620. Someone told me that KTM counts from the 2nd part of a years. So a KTM built in August '93 should be a '94 model. I also changed piston rings and I think it's piston from 620. Also in the cilinder head is the number 62 stamped (I attach a pic from that).
I do have an oil filter behind the engin and underneath also. But not in the frame... So in my opinion it's a 620, but of course I can ben wrong...

For the electronics I will have to buy everything new... Switches, turn signals, everything. Only the head light and the rear light I already have...
 

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The switch you mentioned is perfect, I will buy that one!

Another thing... The front and rear break lights... You think there are switches attached on the bike to let the rear brake light work when braking?

On the rear brake I find an electrical attachement... I put a photo of it...
 

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I attach some photo's from the lights and connectors that I have with the bike.
 

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That is one of those China import exc Maske with an e number on it. Nice! I am using those also on all of my Supermoto builds. I Always have to try which color is which function. As far as i remembered, is Green to ground, brown for parking light, blue for high beam, white for normal light. But you netter try with a simple 12V battery.

Tail light looks original. It is pretty big. But with the Vibrations at Ur tail, they r working longer as the LEDs. Brown is ground, White is light, Green White is braking light. Braking switches habe to be connected parallel.

(+) -> switch1 greenwhite
-> switch2 greenwhite
 
At the front brake housing I see only this little box... Ik suppose it is the electrical connector for brake light?
 

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Yes it is, that's the other version they used at that time. But the terminals look like they are ripped off. I would take the switch off, and see what hole size the brake cylinder has. Maybe the one I linked earlier fits, if there is a thread in there.
I don't know the parts number for this one.
 
the front brake switch/ its connectors are gone
 
them0leisback schrieb:
Yes it is, that's the other version they used at that time. But the terminals look like they are ripped off. I would take the switch off, and see what hole size the brake cylinder has. Maybe the one I linked earlier fits, if there is a thread in there.
I don't know the parts number for this one.
Zum Vergrößern anklicken....
I don't see any thread inside. So better I look for original parts no?
 

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Should be a standard Part for alot Brembo brakes. Such as Ducati etc. I use normal microswitches for that. Cause they cost a 1/10 or so. https://www.ebay.de/itm/125599264017
Should be a nc Switch. Think my linked one can do both.
impression
 
Exactly. If U buy those cheap ones i linked, easily dismount the Little Metal Thing, Cut Out then non used middle Pin. Thats it. Fits, works. Cheaper.
 
I ordered the 'kombischalter' and the front switch. So in a few days I will recieve it home.
But do I still need the 'batterietrennschalter'??
Because I don't have a battery... It's not complety clear to me

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Why a battery disconnect switch without the battery that would be designed for it ?

No, you don´t need this Battery disconnect switch
 
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