[ky650]

Curvy non running bike I got.
Stripped the harness, set up like the diagram.
Turns over but no spark.
Verified that the coils are good they will spark with a ground applied. There is power to both sides of the coils.
The resistor checks good, the diode checks good. Tried a ecu with my other sv that runs, still no spark.
Here are the 3 connections what do you think I'm missing?

 

[TeeRiver]

What is the voltage directly across the 100 ohm resistor?

... Tried a ecu with my other sv that runs, still no spark.

Just to clarify:
A) Do both ignitors show good-spark in your running bike?
B) Do both ignitors show no-spark in the project bike?

 

[TeeRiver]

Hi Ky650, Did you get this fixed?

If so, can you please post the voltage across the 100-ohm resistor?

There has been conflicting information posted on the exact voltage, and another data point will help SVR help other folks like you in the future.

Thanks!

 

[ky650]

What is the voltage directly across the 100 ohm resistor?


Just to clarify:
A) Do both ignitors show good-spark in your running bike?
B) Do both ignitors show no-spark in the project bike?

The running bike runs perfect, it's my current track bike but it has all the stock wiring. So I know the cdi is good.
The non runner has good coils for sure, I tested them both, they have 12volts on the both sides and will fire if I ground out the coils, big fat spark.

I just tested across the resistor, ohms is still fine but I have no voltage across the resistor. 0 volts.

 

[TeeRiver]

... I just tested across the resistor, ohms is still fine but I have no voltage across the resistor. 0 volts.

0 volts across the anti-theft resistor is no good. Find out why, you will fix the problem.

As a sanity check, try measure the voltage on Orange/Red on the running bike.

Do this with the key On, kill switch set to Run, bike in neutral. Clip the Black meter lead to Battery(-). Push the tip of the Red meter lead (sharpen it up on sandpaper if necessary) through the insulation on O/R. The ignitor must be plugged in when making the voltage measurement.

 

[ky650]

0 volts across the anti-theft resistor is no good. Find out why, you will fix the problem.

As a sanity check, try measure the voltage on Orange/Red on the running bike.

Do this with the key On, kill switch set to Run, bike in neutral. Clip the Black meter lead to Battery(-). Push the tip of the Red meter lead (sharpen it up on sandpaper if necessary) through the insulation on O/R. The ignitor must be plugged in when making the voltage measurement.

I had a wire in the wrong spot on the test, I re tested the resistor, I get
.75 volts across the resistor with the power on. Same reading if I run the starter.

 

[TeeRiver]

For reference, what is the voltage on O/R on the running bike?