I have a 2000 FLHTCUI and I added the Harley headlamp flasher unit to my system for that added daylight visibility. Ever since then I have been having Harley Davidson headlight problems with the fuse. I have been blowing them about every 2 -4 weeks of use if I have the spots on. When I leave the spots off there is not a problem. I have thought about putting a 20 amp fuse on to see if that will take care of it but I worry that I could have a more serious problem develop because of that. The interesting part is that the fuse has only blown when it is dark out and not during the day. I have also added turn signal accents that mount to the fairing but I have not had a problem with those. What else can I check? Thank you, Virgil
Virgil, Was this Harley Davidson headlight flasher unit designed for your make and model bike? Was it plug and play? There should be specifications in the instructions that will tell you how much this flasher will draw. You either have a dead short, or you are over loading this 15 amp fuse. Check your headlight plug. Verify that your connections are secure and that the plug has not melted. If you are overloading the circuit, you need to feed the headlight from another fuse that is not as “full”. Or, if you are knowledgeable of DC voltage, you can find the correct feed wire and isolate it with it’s own fuse.