Find a Wiring Diagram
Would you go on a long road trip to someplace you’ve never been without a map or, at the very least, some directions? Probably not. The same is true for electrical problems. Don’t get into an electrical diagnosis without a wiring diagram. It will take longer and perhaps cause you a great deal of frustration if you don’t have a wiring diagram for the circuit you’re working on. A wiring diagram is the roadmap for a particular circuit. Without it, you’re lost.
I realize that if you don’t know how to read a wiring diagram, you’re in the same position as not having one. If that’s the case and you’ve checked all the basics and still have an electrical problem, perhaps it’s time to take the issue to a professional. It might seem expensive up front, but in the end, you might find that you save a great deal by not pursuing the problem yourself.
If, however, you do know how to read a wiring diagram, do your best to get your hands on one for the circuit you’re working on. It’s not often you find these online for free; you normally have to pay for them.
Once you’ve found the diagram and have studied the circuit, try to come up with a plan for testing that can yield you a result. With an understanding of the circuit and a good idea of what the issue might be, I’m sure you’ll be able to solve the problem in a reasonable amount of time. If you go in blind, expect it to take a lot longer, and the results might not be what you expect.
Video Title: Find a Wiring Diagram – Solving Automotive Electrical Problems – EricTheCarGuy Video Description: In this Article we talk about how to Find a Wiring Diagram for your vehicle.Thumbnail: http://www.ericthecarguy.com/images/faq_buttons/Large_FAQ_Images/Electrical-icon-1200.jpg
7 thoughts on “Find a Wiring Diagram”
Darren Fraser
February 20, 2020 at 8:49 am
Hi Eric. Could you link me up with a site that supplies wiring diagrams? I don’t mind paying for them either as long as they are accurate. Is Autodata worth subscribing to?
Brian
August 27, 2025 at 9:07 pm
08/27/2025
Hi Eric:
Could you please tell me about wiring harnesses? I’vr been a fan for years, may, at some point try to swap out a Honda 4 Cyl engine. I don’t know if you / someone in your midst could delve into this. Wiring harnesses may pose such an enormous involvement outlay, that it’s just not possible to help. I don’t even have a rolling chassis just yet. Are Harnesses extremely difficult to replicate? There currently is no engine in existence, nor (as mentioned) is there a chassis. Is there a cheapie way to involve a “newish” harness for a donor engine on, possibly, a Civic??
EricTheCarGuy 1
August 28, 2025 at 6:46 am
One thing at a time, for both. You first need to come up with a plan. What do you want to do with this vehicle? is the most important question. Once you have that figured out, you can work the plan. As for wiring harnesses, one wire at a time is how I do it. It’s tedious and time consuming, but even more so if you get it wrong. Good hunting.
Brian
August 28, 2025 at 5:20 pm
August 28, 2025
Eric:
Currently, I really haven’t even got a space to “settle” a “repair setup”. The current Honda I drive has 220000 miles on it. Maybe you would have time to think about this. Perhaps, one could split the transmission off of the engine while still in the Engine bay — but the transmission hasn’t tanked as yet. It’s an Automatic Transmission. Any thoughts would be helpful.
EricTheCarGuy 1
August 30, 2025 at 7:42 am
You can’t remove a Honda V6 transmission without removing the subframe, at least as far as I know. You can leave the engine in the vehicle, but you will need to support it, usually with a strut brace. The transmission is never coming out with the subframe in the way though.
Clark
February 14, 2020 at 2:56 am
The wiring diagrams are no longer available. Perhaps you should update this information in your blog
Niko
April 25, 2023 at 10:27 am
This is the 4th video that is giving an Error 404 message… yea, an update would be super!
#Ericthecarguy