Hi Guys, Rags from Australia, first post.
I hope that someone out there can help me with an electrical fault.....
I have a 2003 FLHSTC ,,,and now that the weather in middle Australia is getting cold Ive lost spark.( its only been doing this over the last 4 weeks)
Yep when its cold no spark, every thing else works lights, blinkers, starter but no spark.
When I park the bike in the sun and it warms up, starts no problems plenty of spark.
Ive changed coils, checked the crank sending unit, swapped ignition modules, chased leadsto check there isno loss connection.
Can any one out there in Harleyland offer me some assistance, Im at wits end.
Thanks
Rags

 

When you say "no spark", when cold, have you taken out a spark plug, held it to the head, cranked the engine, then were unable to see a spark arc? Once I put in a new set of plugs and forgot to gap them. I tried to kick start the bike until I was pooped...then I gapped the plugs and it worked fine.

 

Hi Mate, yes I have taken the plugs out and grounded them.
I have just received a email from from a Harley dyno wizard, Neville Lush of Lush Racing Aust and he suggests to check all the connections on the ignition switch on the tank.
So I will give that a go.
See ya
Rags

 

Check the kill switch leads too......had a problem with mine with a short in the handlebars switch.

 

Electrical gremlins are the worst. Running down the starter circuit is good advice. Usually the problem is at a connection, as the cables are pretty well shielded.