Hey I'm Erick and I am having trouble with what wiring harness I should buy to have installed on my van. See I would have chosen what wiring harness kit to get a while back but my car is a mixture of two years. First my engine is a 1992 302 5.0 v8 ohv (which obviously is efi). 2nd my car itself is a 1986 ford e150 overdrive. So I have old parts on the van too so if I buy one kit it won't work out.So do I buy two different wiring kits or is there a special order I can place? Anyone knows of a good trusted website or auto store?

 

What type of wiring harness are you wanting or needing? There are several different harnesses...

 

Well I want to rewire the entire car. Not me but someone else. So I thought there might be a kit for rewiring the whole car.

 

Let me make sure I understand.

You have a 1986 van and you want to install a 1992 302 in it? only the engine not the transmission?
What engine does the 86 have in it now?

I have a 1988 and a 1985 e150 both with a 302 and aod transmission.
I converted the ignition system on my 85 from a EEC IV with TFi ignition back to a duraspark system. It also had a feedback carburetor controlled by the EEC. I believe by 1986 all 302s were efi while the 351 and larger were still carburetors.
My 88 is a 302 with efi

depending on the engine you have in the 86 now, you may have to change the fuel system too. the carbed engines used the standard fuel pump on the engine while the efi engines used a pump in the tank.

 

It's not that complicated... I bought the van but throughout these past 9 months I have had it issues popped up here there and that's when I realized that the van didn't have its original engine but instead a newer compatible version. So the fuel line is different in order to work with the efi engine. But many of the other parts are still the old ones.

I checked under the van and the transmission does say Aod and the back of the car has a aod emblem on it. The last owner I bought it off of had a really ****ty mechanic because the van wouldn't start with the key itself... The heater/a.c. doesn't work or the compressor. Internal and external lights don't work. Just the emergency and brake lights. Fuel pump is being bypassed by some wires to keep it functioning. So I don't know if to buy separate individual wires and then rewire or is there a kit I could buy to have it installed? I tried looking but I might be looking at the wrong direction.

 

Oh idk how important it is but my vans info on the Drivers side door says something about incomplete vehicle?

 

i doubt you could find a complete wiring harness for your 1986 van if you could it would be very expensive. and the cost of it and installation would be more than you paid for the van. it would be a major undertaking. the harness is made up of many sections that plug together. what makes you think the wiring is bad unless it has been all cut up. have the light bulbs and all the fuses been checked. you could pull some of the wiring from a van at a u pull it junk yard. otherwise you really need a good electronics guy with a test light to start finding out whats wrong.

 

That is what I am thinking Garysvan...

The 1986 vans with a 302 were EFI and i believe it may have been a stand alone harness for the most part..

My 85 van with a 302 had a stand alone harness from the EEC. 1986 was the year "some vans came with EFI. When I converted my 85 to the older Dura-Spark ignition I used a harness from a 1986 van that had a 351 in it. Basically all I had to do was unplug the TFI distributor and engine sensor harnesses from the 85 and plug in the 86 harnesses. Of course I had to change the TFI distrubitor and add the dura-spark ignition box. After that was done it was a matter of pulling out all the wiring harness for the EEC to the engine.

So during the years when Ford was converting from a carb to EFI, most of the vans basic harnesses were wired for both, at least when it came to a feedback carb controlled by the eec and non EEC vans.

If Erick's van has a fuel pump inside the gas tank and that tank is original, then that van came with a 302 that was EFI.. If he could find a 86 with a 302 then he could use the harness. I am not sure about the differences in the later models on up to 91.
I know on my 88 the EEC harness is woven in with some of the other harnesses.
But back to the 85 and 86, I am pretty sure they are stand alone.
The lighting should be a completely different harness. I know there are stand alone EFI harnesses/systems sold for people that covert older cars from carb to EFI

AS to "incomplete vehicle", I believe those are when say just the chassis or some combination like maybe a cut away are sold to a body builder who finishes them up.
Here is some information that might be helpful about that.

Vehicle certification Label is more than it appears
Vehicle certification Label is more than it appears

 

Yeah it's not the fuses. I checked pretty much all the wires and most of them are either cracked and oxidized or cut up and rewired previously but not done properly. Oh and the light switch is fried up along with the harness its connect as to. Well you guys helped out and cleared many of my confusions and questions. So I should just buy every harness and wires individually according to how they are supposed to be connected right?

 

Oh and both fuel tanks have a fuel pump inside it cause I had to change both of them.

 

Well if you are going to replace them all then like Garysvan said, pull a parts will be your best option unless you want to build your own harnesses. One thing to keep in mind is that you do not have to use 1986 stock ford connectors for all the connections. You can use different connectors as long as the amperage rating is the same or higher.
Another thing to keep in mind is that some of the wiring has to be the exact same gauge and length due to resistance factors depending on what they go to.

Here are a couple of good resorces for parts.
ClipsAndFasteners.com - Automotive Retainers,Clips and Fasteners

https://www.delcity.net/store/Loom-&-Loom-Clamps/

http://www.mouser.com/Interconnects/...FQxYDQodx6wHxw

Another thing is that some of the original wiring has ballast resistors and fuse links built in them and will have to be built into a new harness.

Also you will need some good manuals to go by. if your van says incomplete vehicle than it is something other then stock complete from the factory which may include harness changes.
I have found that even though these are ford manuals, sometimes the diagrams are not exactly correct.

1986 FORD E 150 250 350 ECONOLINE VAN ELECTRICAL VACUUM EVTM SERVICE MANUAL OEM
1986 FORD E 150 250 350 ECONOLINE VAN ELECTRICAL VACUUM EVTM SERVICE MANUAL OEM | eBay

1986 FORD VAN ECONOLINE E 150 250 350 ELECTRICAL WIRING DIAGRAM SERVICE MANUAL
1986 FORD VAN ECONOLINE E 150 250 350 ELECTRICAL WIRING DIAGRAM SERVICE MANUAL

FORD 1986 Bronco, Econoline E150-E350 & F150-F350 Pick Up Truck Shop Manual CD
FORD 1986 Bronco, Econoline E150-E350 & F150-F350 Pick Up Truck Shop Manual CD | eBay