So basically I was tearing down my bull nose and I put all the wires in a bag to look through to what to keep and throw away but that bag got accidentally thrown away luckily the 3 set of wires were not in the bag that I need to start the engine but I know for a fact all the wires that went to the ac, wiper motor etc
were thrown can I still wire all those other components without those wires I know it’s possible but can it be done like almost oem

 

Yes, you can easily make your own harness. Learn how to use wire terminal crimpers. It’s the best tool you will ever learn to use. Learning how to make a factory connector is a breeze. Or buy a new complete engine wire harness. I can’t remember the name of the small business on Ebay that makes them. Look up 1973 Dodge Dart Swinger complete wire engine harness. That’s the guy, he makes a lot of harnesses for a lot of classic cars, etc. Just ask him if he can make one for your year and model. They are very good quality, etc and cost around $100-$120 bucks. Do it right. By doing one or the other.

 

You may want to recheck the harness you have as I thought the wiper connections (switch & motor) were part of the main harness?
This main harness runs across the top of the dash frame and goes out the firewall on each side.

Oh wait I think there is a ALT / REG harness that plugs into the main harness over by the battery.

Now the AC harness is a add on to the main harness. IIRC the non-AC trucks has the blower motor harness looped and plugged into it's self.
To add AC you unplug this loop and plug the AC harness into each plug and run the other end out the firewall to the pressure switch, compressor and the carb solenoid to bump up the idle speed when AC is on.

It has been years since I swapped harnesses from parts truck to mine so not 100% on the ALT / REG & wiper harness but I am 100% on the AC harness.
The reason I was did the swap was for the AC then found it was a add on.
But the parts truck also had duel tanks that I added to my flare side and that is part of the main & frame rail harness.
Dave ----

 

I love your positive attitude, but I haven't seen very many places that sell original style harnesses for these trucks. I think someone found one company. I thought it was American Autowire, but I seem to have struck out on their website. Most of these wiring harnesses that come up are universal. The fuse box doesn't match the Ford literature. The wiring colors don't match the original. And they have no original connectors. Just be careful of that.

Most people go to the junkyard and get a harness from a used truck.

 

I have a box full of 80's Ford harnesses and various OEM Ford wire connectors left over. You can have 'em Free. Fixing to scrap them soon. I also have a 80's alternator wire harness, too much crap in the shed.

 

Check out American Auto Wire, they have a kit for our trucks, pricy as hell at $1,800 but its a complete kit that will rewire your entire truck. It also is an update kit that has a bunch of circuits your OE harness wouldnt have. I thought of doing this on my truck but decided against it as it requires removal of the dashboard and my plastic dash will without a doubt fall apart if I try to take it out.

 

After you said that I checked again. They do indeed sell a harness that is supposed to fit these trucks. Their website is hard to navigate.

Here's the harness. https://www.americanautowire.com/sho...d-truck-bronco

Here are the instructions for the harness. https://smhttp-ssl-87263.nexcesscdn....4_IN_0.0_1.pdf

I read through some of the instructions, this is my opinion on it. Yes, it is a harness that "fits" these trucks. Fits means different things to different people. There are a lot of the original connections that this harness does not support. What do they do? They tell you to use the original connector on your old harness, cut the original wires some distance away from the original connector, and then crimp and use their different connector that comes in their harness. Is that ok with most people? You will be using many original connectors, and that can be a place were most problems exist with the electrical of these trucks.

I haven't verified this, but it looks like they are also using some different style switches. That may be the dimmer switch in the floor, the headlight switch and maybe some others. In these cases you get a new albeit different style switch, and they have the connector for it in the kit.

What I don't like and is a beef I have with most all aftermarket wiring; Where is the wiring diagram for the completed system? How is someone going to troubleshoot and work on this wiring now that it is not stock? The fuse box is different with different numbers and locations of the fuses. There are different wires and different connectors than the factory used. How is a person supposed to find a connector, find a certain wire in that connector, and take their meter and troubleshoot for a possible problem?

I applaud this company for making this harness, it seems to be the only one out there that is a little bit better than a universal harness. But it could be better than it is. If you have a truck where the harness is completely missing or melted, you will need another used Ford harness, since this replacement harness uses parts of the old harness.

 

There is a wiring schematic included with the instructions that tells you what goes where. Like wise every wire every 4 to 6 inches has what it is pad printed on the wire itself. On the connectors many of the connectors that are not sold anymore will require you to either A) reuse your old connector and they supply new terminals or B) require you to splice into the original wiring.

On the differences it is why they are called a upgrade set, it is to upgrade your electrical circuit to late model stuff including the fusebox which I personally hate cause it is so far away from OE but if you want new that is the best you will get at this point in time. Hopefully the popularity of our trucks grows to the point that they start selling legit reproduction components to OE specs.