20 Most Recent 2003 Harley Davidson FLHTCUI Electra Glide Ultra Classic Questions & Answers

Shown here. Power is the orange. Ground is black. Signal is Yellow. https://www.hdforums.com/forum/dyna-glide-models/687505-fuel-gauge-wiring-confusing-2.html https://www.google.com/search?q=2003+Harley+Davidson+Ultra+Classic+Wiring+diagram+for+the+fuel+gauge ..

Question edited for clarity and Maker name. Question moved to Make / Model category. That means it is a transient fault. The ECM finds an issue and then on rechecking, it goes away so the light goes off. You will either have to catch the code when it happens or wait for the fault so show up all the time. A dealer may have a scan tool that can record the fault when it happens like a pro grade scan tool computer for a car can.

get a good tuner and that should fix the problem. Sounds like running to lean.

Duplicate question already answered

Does it have spark?

I presume you mean the radio/cd cuts out and not the engine. I also presume you are not letting the bike idle away as you listen to music! If you are, then the bike is over heating and piston seizure is the causing it to stop. Now, if it is just the radio/cd unit cutting out, the radio/cd unit has developed a thermal fault that requires specialist attention. Nothing you can do.

Thermal safety cutout is shutting down ignition, if you don't feel the engine is that hot replace thermal cutout and relay

Gear oil ,,,,I like spectro platinum or red line oil .. any GOOD gear oil 80/140... not the oil hd sells too thin.. check out more hd stuff at harleytalking.com ................03 is a cool bike.....

I had a problem like that on my 2003 ultra classic. turns out there was a recall on some electric block in the fairing. It was a main connection power block kinda thing. Anyway they replaced it and then it never happened again.

it would ride a while on a hot day 25 min freeway and then just shut down. wait and cool down and it would restart.

I hope this helps.
JD

Hi Donald: First basic questions - Tire pressure correct? - Tire condition? - When does this happen? Cornering? - shock setup? - Load? - Speed? Any info you can give will help to find the problem. If you reply as a comment to this post I'll receive it. Cheers.