Wiring harness
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Trailering
Joined: Apr 2021
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From: tacoma,washington
Wiring harness
I have a 68 f100 original had a 360 and I’m looking at wiring diagrams and everyone I have seen show a 3 fuse fuse box but mine has five fuses. The 1970 diagram looks a lot like mine so does anyone have an idea what I should do? I want to purchase a new harness and rewire my truck but not sure which harness to get. Thanks
Lead Driver
Joined: Jul 2017
Posts: 9,610
Likes: 1,181
From: San Jose, CA
The five fuse panel in the diagram is the most common that I’ve seen. Personally don’t remember any three fuse panel.
Got a picture of it?
Does anyone make a reproduction wiring harness for your truck? Or for any of these trucks yet?
And do you want it to be a concourse restoration, or would upgrading the harness to something more modern be an option?
Got a picture of it?
Does anyone make a reproduction wiring harness for your truck? Or for any of these trucks yet?
And do you want it to be a concourse restoration, or would upgrading the harness to something more modern be an option?
Logistics Pro
Joined: Mar 2009
Posts: 4,857
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From: Minnesota
Lead Driver
Joined: Jul 2017
Posts: 9,610
Likes: 1,181
From: San Jose, CA
Does this diagram with the 3-fuse panel show it looking the same as a 5-fuse panel? Same shape and size in other words?
You may be looking at a diagram showing one branch. Such as switched circuits only, or constant circuits only.
With three, probably switched.
I’ve seen that in more modern diagrams where they had separate images of the fuse panel, or just one image showing switched only, and then the constant power fuses were listed separately along their circuit pathways.
The smallest fuse is the one for the instrument cluster illumination which is only hot when the headlight switch is turned on. does your diagram indicate that particular fuse?
The older diagrams for the Broncos all show five fuses in one unit all the way back to’66, but I have seen versions that separate them out for the full size trucks.
You may be looking at a diagram showing one branch. Such as switched circuits only, or constant circuits only.
With three, probably switched.
I’ve seen that in more modern diagrams where they had separate images of the fuse panel, or just one image showing switched only, and then the constant power fuses were listed separately along their circuit pathways.
The smallest fuse is the one for the instrument cluster illumination which is only hot when the headlight switch is turned on. does your diagram indicate that particular fuse?
The older diagrams for the Broncos all show five fuses in one unit all the way back to’66, but I have seen versions that separate them out for the full size trucks.
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