wire gauge
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3rd Gear
Joined: Jul 2013
Posts: 7
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From: Stone Mountain, GA
wire gauge
I am trying to freshen up a 2003 FXDWG. I have plenty of manuals and diagrams, but I cannot find the original wire gauges for what is in the bike. Can someone post this info or tell me where to find it?
Thanks for your time.
Thanks for your time.
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3rd Gear
Joined: Jul 2013
Posts: 7
Likes: 1
From: Stone Mountain, GA
good point
Thanks for your reply.
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Joined: Jan 2007
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From: along the shore of Mishigami
Wire size is determined by the load it's going to carry versus the distance it's going. I.E. batteries -6 or 8 ga., gauges 18 or 16 ga. You would have to take the harness out and take lots of notes as to what wire to what is what size, the wires should be marked.
Ultimate HDF Member
Joined: Jun 2010
Posts: 5,105
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From: Blaine, WA
That's not something that will be published, wire size will vary all over the place depending on load requirements for each circuit. If you need to know, buy a wire gauge and measure it.
Outstanding HDF Member
Joined: Dec 2012
Posts: 2,557
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From: Texas
That is a great chart!
Rule of thumb, you can run larger, but never run a wire that has a lower current rating than the fuse protecting the circuit. In other words, do not run a 20 gauge wire on a circuit that is protected by a 15 amp fuse. According to this chart, most of your general system wiring will be 16 - 18 gauge wires so you can probably safely use 18 gauge wire for all applications except starting and power generating circuits that will carry large current loads. These circuits will have larger gauge wire. Just use the fuse size and distance from the fuse to the device guide your choice for wire diameter. Going larger (lower gauge number) is OK, going smaller (higher gauge number) is not advised...the wire may burn up in the bundle before the fuse opens the circuit.
Rule of thumb, you can run larger, but never run a wire that has a lower current rating than the fuse protecting the circuit. In other words, do not run a 20 gauge wire on a circuit that is protected by a 15 amp fuse. According to this chart, most of your general system wiring will be 16 - 18 gauge wires so you can probably safely use 18 gauge wire for all applications except starting and power generating circuits that will carry large current loads. These circuits will have larger gauge wire. Just use the fuse size and distance from the fuse to the device guide your choice for wire diameter. Going larger (lower gauge number) is OK, going smaller (higher gauge number) is not advised...the wire may burn up in the bundle before the fuse opens the circuit.
Last edited by FXD2003Rider; Nov 10, 2015 at 11:45 AM.
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