Ignition fuse blowing
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Stage IV
Joined: Jun 2019
Posts: 4
Likes: 0
From: Omaha
Ignition fuse blowing
Hi everyone, I rode my bike into work today (09 fxdb) and it was just fine. Went to leave and nothing. Dug around a bit and the fuse for the ignition was own. Went through several fuses. As soon as I turn the switch to on it pops. Have lights but no turn signals. Took the dash off and couldn't see a problem. Is it possible the switch is bad? I relocated the ignition switch early last year and haven't had a single problem until now.
1st Gear
Joined: Jul 2017
Posts: 5
Likes: 2
From: El Cajon, CA
I have a 17 FXDLS but I was having pretty much the same problem as you. I tried my best to track it down and finally gave in and took it to the dealer after some 25 blown fuses. They found the main wiring harness below the seat pan, just in front of the rear fender had slightly rubbed through and would short. It was something I would never have seen. Luckily I was under warranty at the time so I got a new wiring harness out of it.
Just for a little further info: I would be riding and all of a sudden I would lose lights and gauges but everything else would still work. Once I turned off the bike, it would not restart. Blown ignition fuse. I would replace the fuse and she would either start no problem, or the fuse would blow as soon as I flipped the switch. It was not ALL the time but often enough to be problematic. It was just a tiny short that only happened with the right combination of bumps and motion.
Just for a little further info: I would be riding and all of a sudden I would lose lights and gauges but everything else would still work. Once I turned off the bike, it would not restart. Blown ignition fuse. I would replace the fuse and she would either start no problem, or the fuse would blow as soon as I flipped the switch. It was not ALL the time but often enough to be problematic. It was just a tiny short that only happened with the right combination of bumps and motion.
Thread Starter
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Stage IV
Joined: Jun 2019
Posts: 4
Likes: 0
From: Omaha
Thanks for the replies! For clarification, I relocated the ignition to the dash from the neck, using an aftermarket switch. Didn't cut any wires, made a pig. I rode 50mi to work trouble free but when I went to go home, turned the switch and pop. Went through several fuses and gave up and trailered her home. I've been working so much I haven't even had time to look at it yet. I have a new switch coming, I'll keep you posted!
Seasoned HDF Member
Joined: May 2008
Posts: 21,131
Likes: 12,691
From: South Carolina
Looking at a wiring diagram instead of guessing can save a lot of time and money...
If there is a short causing the ignition fuse to blow, the short must be somewhere in the wire after the ignition switch.
The ignition switch is before the ignition fuse, so no way can the switch cause the ignition fuse to blow.
If the short were in the switch, it would blow the main fuse.
Have you had the handlebar switches apart?
If there is a short causing the ignition fuse to blow, the short must be somewhere in the wire after the ignition switch.
The ignition switch is before the ignition fuse, so no way can the switch cause the ignition fuse to blow.
If the short were in the switch, it would blow the main fuse.
Have you had the handlebar switches apart?
Last edited by Dan89FLSTC; Jun 13, 2019 at 07:41 AM.
Thread Starter
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Stage IV
Joined: Jun 2019
Posts: 4
Likes: 0
From: Omaha
Looking at a wiring diagram instead of guessing can save a lot of time and money...
If there is a short causing the ignition fuse to blow, the short must be somewhere in the wire after the ignition switch.
The ignition switch is before the ignition fuse, so no way can the switch cause the ignition fuse to blow.
If the short were in the switch, it would blow the main fuse.
Have you had the handlebar switches apart?
If there is a short causing the ignition fuse to blow, the short must be somewhere in the wire after the ignition switch.
The ignition switch is before the ignition fuse, so no way can the switch cause the ignition fuse to blow.
If the short were in the switch, it would blow the main fuse.
Have you had the handlebar switches apart?
Seasoned HDF Member
Joined: May 2008
Posts: 21,131
Likes: 12,691
From: South Carolina
The wire coming from the ignition fuse is gray.
Try unplugging the connector for the right hand control switches, see if the problem still occurs.
Try unplugging the connector for the right hand control switches, see if the problem still occurs.
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Stage IV
Joined: Jun 2019
Posts: 4
Likes: 0
From: Omaha
Yep, controls it was. Thanks for the help everyone!
Last edited by Donkey_1979; Jun 17, 2019 at 11:20 AM.
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2nd Gear
Joined: Oct 2019
Posts: 6
Likes: 0
From: Albuquerque, NM
I'm a bit late to this thread. My ignition fuse is also blowing. All the information I read on this thread as been helpful. My problem is not the switches, I changed them out when I swapped out handle bars. Back to the wiring diagram it is!!
Thanks......
Thanks......
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