Coils melt kz1000 st 79

Hello riders, Im in proces of modification of my KZ 1000 st shaft 79, i change all the electrical sistem to a New and moder one with m-unit blue, stator, regulator , solenoid are from ricks electronics , and is the second time that the motorcycle melt the coils , do i have to use a resistor? Please any help i will apreciated!

Pichu (sorry my inglish is not god )

I would make sure the coil primary power is actually getting turned off with the new M-Unit. If they are getting consistent power they will burn out

Pichu1214 wrote: Hello riders, Im in proces of modification of my KZ 1000 st shaft 79, i change all the electrical sistem to a New and moder one with m-unit blue, stator, regulator , solenoid are from ricks electronics , and is the second time that the motorcycle melt the coils , do i have to use a resistor? Please any help i will apreciated!

Pichu (sorry my inglish is not god )

Hello Pichu, I am sure the 79 KZ1000 models used a ballast resister with 2 ohm coils. Without the resistor your coils see too much current. This heats them up and destroys them.

You have two choices.

1) Install a ballast resistor
2) Install a Dyna S ignition system and replace your coils with 4 ohm ones. If you buy them from Dyna you should get the green ones.

Thanks hardrockminer, i instal de dyna S with the green coil and is the same , they melt .

The Dyna S should connect directly to the green coils. Is that what you did?

Last summer I put a Dyna S with green coils on my 1980 KZ1000 LTD. I removed the exciter completely and hooked the Dyna S pickup directly to the coils.

Does the bike run?

With your bike turned off.
Use your voltmeter.
Set voltmeter to DC V
Put your black meter probe on negative part of battery.
Put your red meter probe on the positive part of battery.

Move your red meter probe to each coil terminal.
What are your voltage readings?

Start your motorcycle
Take the voltage readings again.
What are your voltage readings?

Yes i dit that, and continue de problem.

Yes, i did that and still the problem

I need those voltage numbers or I can't help you.

If someone can translate what i said below into Spanish, that may help out Pichu.

Does the bike run?

With your bike turned off.
Use your voltmeter.
Set voltmeter to DC V
Put your black meter probe on negative part of battery.
Put your red meter probe on the positive part of battery.

Move your red meter probe to each coil terminal.
What are your voltage readings?

Start your motorcycle
Take the voltage readings again.
What are your voltage readings?

Using google translate. edited. ¿Funciona la motocicleta?

Con la motocicleta apagada.
Utilice un voltímetro.
Ponga el voltímetro en VDC.
Conecte la sonda negra del medidor al terminal negativo (-) de la batería.
Conecte la sonda roja del medidor al terminal positivo (+) de la batería.
¿Cuál es la lectura de voltaje de la batería?

Mueva la sonda roja del medidor al terminal positivo (+) de cada bobina de encendido.
¿Cuáles son las lecturas de voltaje para cada bobina?

Arranque su motocicleta
Vuelva a tomar las lecturas de voltaje.
¿Cuáles son las lecturas de voltaje para cada bobina de encendido?

Summary of the voltage readings.
Resumen de lecturas de voltaje:
Voltaje de la batería = ?
Motor parado:
Voltaje de la bobina de encendido LH = ?
Voltaje de la bobina de encendido RH = ?
Motor en funcionamiento:
Voltaje de la bobina de encendido LH = ?
Voltaje de la bobina de encendido RH = ?

Hello, the moto dont start, this is the volt that the m unit register 12.2V