'96 Skorpion - No Spark, How to test the coil, CDI etc?

[pwillikers]

My Skorp won't start. It cranks fine but there's no spark at the spark plug. I probed around and found 12V on the RW (red/white) wire between the coil and the ignition module in the attached photo. I replaced the spark plug and still no spark. I believe the only remaining suspects are the ignition coil, the ignition module and the "trigger coil in engine". What's the procedure for checking these? What voltage, resistance should I see where and when? Thanks.

[DAVID THOMPSON]

in the middle of picture cut off relay also labeled relay 19 on my rt125
it died on my rt125 but before it did made the tach. read funny

do a search on site for relay 19
ar dave

jumper red black to red white at relay pin 3 to pin5
if bike starts and runs relay is not passing enough current to power everything
the relay on mine was very small and supplies power to a lot of the bike

link to my past post on relay 19
viewtopic.php?f=4&t=2085

[pwillikers]

Just to close the loop on this topic. After an hour or so of probing with a meter etc. it miraculously fixed itself and now sparks nice and fat.

[DAVID THOMPSON]

these bikes go bad on the plugs in the wiring harness the inside of the plug turns green

and in the rt125 i had a break in a wire.. when i found it the outside cover of wire was ok
inside was full of about 10mm of green slime that used to be the 14 gage wire

i under stand electrical and it a is a pain to find some times

i have been complaining for years about the too complex wiring harness on bikes
and it just gets worse just wait a while
they will be painting the tail lamps and turn signals on the body panels
with a digital module on the back side that will make it work with a signal
from the ECU
boo
ar dave