I have a 2007 1200 nightster. When I turn the ignition to the on position, it blows the ignition fuse. I have trouble shot it over and over. Changed the battery and all the fuses. I don't know what to do...
Now, this sounds like a short in your wiring, I worked on one of these bikes that the wiring harness rubbed against the frame under the left side cover, Blows a fuse and will blow the fuse intermittently or it may not today but 2 or 3 days from now riding it will blow the fuse again, Check the wiring harness the complete bike from head to tail. Look for a real close fit at any spot over/under the frame / covers then check the Insulation for a rub that may have rubbed bare any wires. Check all this. NOW, you still need to check any fuses and or wiring rubs or breaks in the wire, even check harness plugs and the metal tabs inside the plugs for burnt or hot spots. Metal tabs in the plugs can get hot then cool off due to a short and loose a connection. Blowing fuses like this is a good sign of a short in the main wiring. ie. battery,lights and or ign. to and from the handle bars and area. Look in this area for your problem. Look around the front forks and headlight area under the frame mounts. We need to check your battery connection- Follow the main battery wire from the battery to the start relay. In with the relay should be other wires and at least one fuse. Check these connections and any wires in/out for a good tight fit in the plug. Look closely for a loose wire or loose fit in this plug. Now this relay will have another wire that goes down to the starter. Look for the next largest wire out of this plug / relay follow that wire as best you can along the harness look at any other connections / plugs from the harness, even plastic ties to the frame that may be to tight. Pull this wire tug on it yank on it. Next check your key switch any wiring here should be a plug that you can un-plug and look at the wiring there.
Feb 15, 2010 |
2007 Harley Davidson XL 883 Sportster