So now that my engine is in, the fun part comes where i need to wire everything up. atm I would be happy with just getting the wires connected that is needed to make the engine run. Orginally the car was TPI, but when i bought it, someone cut all the TPI stuff and installed a carb. So any tricks to figuring out some of the butchered wiring, and where some things go.

Heres some pictures i have of some enigmas

From the Distributor

Random wire I have no idea

From the cluster of wires I have on the drivers side

 

Do yourself a favor,....

Since the TPI is gone, remove the TPI ECM wiring harness. You can pull the whole thing out and the only thing you might effect is the oil pressure gauge. ( fixing that is as easy as splicing 1 wire to the sending unit. ) Once the TPI ECM harness is gone you will have a much 'cleaner engine bay & should have a LOT less wires to look at - and probably have a couple less wires to 'figure out'.

Your first pic shows the distributor plug with a couple wires removed. Red = BAT(tery), Black = ground, and the other wire ( brown. tan. grey, sometimes white ) = the TACH(ometer). You should be able to figure out where each wires fits into the plug by looking at the top of the distributor cap, ( terminals usually marked BAT and TACH )

 

If that random wire in pic two is the green one it would be your temp sender wire.
Looks like another one in need of an 86 wiper motor cover John. SkinnyZ needs one too.

 

What harnass would i replace it with?

 

You don't need to replace it - you need to remove it. There are 3 major harnesses inside the engine bay of an 86; ENGINE, ECM, And Headlight. Once the TPI was taken out the ECM & harness should have come out with it; No more TPI means you no longer need the TPI harness. All of the basic ENGINE functions are run off the ENGINE harness. ( AKA C100 on the drivers side of the firewall. )

By removing the TPI harness you will probably loose the plug that connects the Oil pressure sending unit to the engine harness - so that 1 wire will need to be added to the sending unit and spliced to the ENGINE harness. The plug I'm talking about can be seen in your 3rd pic; 2 wire connector with 1 Green wire ( AC maybe ) and Tan Wire ( oil pressure sending unit. )

 

Sorry to bring this up from so long ago, but, I need some clarification on this exact issue. I have the ECU/TPI harness out of my car. Only the engine and lights harness left. I have installed a Holley HP with the "TPI" harness. I have everything installed now except wiring it to my fan, A/C, and fuel pump, and also the ignition wiring to it and the fan. The questions I have is:
1) My A/C wiring is all stock (I put in an aftermarket kit for a whole new a/c), It has a sanden style compressor. It has one wire to hook up to my original green compressor plug with a bullet connection. I'm supposed to just tape and tuck the black ground. (these are both on the original compressor plug). The original compressor also had a high pressure switch on the back of it wired from another plug. It says to cut off that plug also and just wire those 2 together. Where I'm stuck ( is since I'm now going to use the holley instead of the original ECU), is where would I wire it in? I think the original request wire is the green 1 in this plug John was talking about (see pic he referenced above) with the oil sending unit gauge wire (tan). It has been mentioned before, but no one has been for sure. Does anyone out there know before I cut this plug off and wire my HP a/c wire to the green wire, then take that tan wire and extend it to the oil sending unit? The FSM shows a splice in the green wire to the compressor with a green going to the ECU but I cant tell if this is it from the FSM.

2) I have my fan wired with a new relay-so I just need to run the ignition wire and sending wire. Since I will use the HP for fan control, I assume I just take the sending wire (that would have gone to the fan temp switch) and run it to my fan wire on the HP ECU, so as long it is the same (have to check again, but I believe its a ground)?

3) When wiring for the fuel pump. I guess I have a dedicated wire for that on the HP. I have purchased a Hotwire kit, new pump, and sending until. I understand that it includes the new relay, bigger power wire that will get its own power from the ALT, and ground. So when I plug it into the harness at the tank, my understanding is this will re-route the power portion of the relay, along with the ground. So, does that leave my sending wire from the original ECU intact? Do I just run my HP fuel pump wire to the original (I think I read that it is tan) at the connector dangling from where it was plugged into the old ECU under the dash (C207?). If so, would I just cut that wire before the connector and solder those 2 together? And would this be the best place to get my ignition feeds to connect to what needs ignition wires also (fan relay and new ECU)? I guess i'm confused on how the fuel pump is wired in contrast to the new hot wire (since it has its own relay) Isn't the old relay by-passed. I though I got rid of it when I took out the TPI harness, and driver side relays by the brake booster. My mind is mush-I've been doing this restore/swap way to long.

I would really appreciate the help here if you can. This is my last step on this car before I take it to get the new Y-pipe from Dyno Don welded up to the exhaust and the rear dropped so I can put in the new pump and sending unit, and clean out the tank. I will then be able to fill all fluids, prime the oil and try to get this to start. When I started this project, the only thing I had ever done before was changing oil and collapsed brake lines, lol. Since, I have helped fix and paint the body, put in a whole new interior (floor to ceiling) including reupholstering the seats, fixed the hatch pull-down, interior wiring (mice ate up), complete engine and ecu swap (383 holley stealth ram), complete HVAC system, swapping to serpentine, cleaning painting engine bay, put all the externals together on my engine, etc. This was a ton of stuff to learn in a little amount of time while working 50 plus hrs a week and raising a family. A couple of things I didn't know what to expect, so I asked on here-and people came through. Thanks. But I did this on my own, my only physical help was my now 15 yr old boy (other than the painting) so yeah, at this point i'm asking for some help on how to wire these specifics (not some one to spoon feed me or do it for me). I just don't want to fry anything and I want it right-searching hasn't given me the definite info I need. Thanks again.