Need Help with Harley Davidson Wiring Harness Diagram

Technical Issues
1

Hey folks,

I’m currently working on a project with my Harley Davidson and I’ve run into some issues with the wiring. I’m looking for a detailed wiring harness diagram specific to Harley Davidson models. I need to understand the layout and connections of the electrical components; this will help me troubleshoot some wiring problems I’m experiencing and plan some modifications.

Here’s what I’ve done so far:

  • Checked the manual for general info, but it doesn’t cover the wiring details I need.
  • Looked online for diagrams, but I haven’t found anything comprehensive that shows connections clearly.
  • Joined forums hoping to find someone with experience or knowledge on specific models, as I believe each one might have some unique wiring setups.

If anyone has a wiring diagram they could share or any resources that detail the wiring harness for different models, it would be much appreciated!

Also, if you’ve gone through any troubleshooting with wiring issues on a Harley, I’d love to hear what steps you took and any tips you can share.

Thanks in advance for your help! Let’s get these bikes running smoothly!

Best,

satkinson

4 Likes
2

I totally understand the struggle! The wiring harness can seem overwhelming. Each wire’s color usually indicates its function—like red for power. Identifying them helps a ton!

3

That’s helpful, Tiffany! What about connectors? Are there specific types we need to keep an eye out for?

4

Great question, carterjuan! There are several types of connectors like Molex and Delphi, each with distinct purposes. Knowing these can save you time when repairs are needed.

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5

Also, don’t forget about terminals! They can be crimped or soldered. Understanding how to properly attach them can make a big difference in connectivity.

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6

Wow, I never paid much attention to that! What’s the best method for crimping terminals securely?

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7

Secure crimping is all about choosing the right tool! A proper crimping tool aligns the wire and terminal perfectly, avoiding connectivity issues later on.

8

I often feel ‘lost in the wires.’ It’s like solving a puzzle! What do you all find to be the trickiest part of the wiring harness?

9

For me, it’s definitely tracing wires back to their origin. Sometimes they’re bundled so tightly it feels like a spaghetti mess!

10

Haha, love that comparison! Just remember, if you have a plan, it doesn’t have to turn into a noodle catastrophe!

11

What types of tools do you all recommend for working on the wiring harness? I want to make sure I have the right gear before diving in.

1 Like
12

You definitely need wire strippers and a multimeter! They make troubleshooting a lot easier. I don’t recommend using cheap tools—trust me, they won’t last!

13

Good call! Investing in quality tools seems more than worth it to avoid headaches.

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14

Hey everyone! I’m trying to wire up my new Harley Davidson, but I’m really struggling with the diagram. Any chance someone could help me out?

15

Hi megan43! I’d recommend checking out the wiring diagram in your service manual – they’re super helpful for visualizing connections. Let me know if you need specifics!

16

I had similar issues with mine. For me, it was just a loose connection in the fuse panel. Did you check there?

17

Thanks, fholmes! I haven’t checked the fuse panel yet, but that sounds like a solid lead. I’ll take a look!

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18

Also, make sure to check the ground connections. Sometimes they can cause weird behavior if they’re not secure.

19

Absolutely! You wouldn’t believe how many wiring headaches I’ve solved just by re-securing grounds. Great advice!

20

You guys are legends! I thought I was the only one. Is there a specific wiring harness diagram you’re using, megan43?