bonylad

Ive almost pulled mine all the way out. I would like to know if anyone has a FAQ or a walkthrough on what was pulled and reused. Im not worried too much about oil pressure and temp at the moment. I will take the harness out and apart to determine whats needed and what can be stripped out. Wanted to know if anyone has a FAQ or basics on what they did.

Thank you!

lmidden

heres an article for swapping over to a carb https://www.thirdgen.org/carbswap should give the basics

3rdgenmaro

iTrader: (9)

just get the wiring diagrams for your car and CLEANLY remove what you dont need.

bestracing

There are two harnesses for your motor, An engine harness and an ECM harness. The engine harness will have the coolant temperature, ignition (+12V), Tach, A/C and oil pressure with it.

Go here for the correct wiring diagram for your car. Only thing that is missing on some of these schematics is the VSS cable for your speedo. You will have to do some cutting, splicing and add a ground to the VSS buffer board to get your speedo to work again.

bonylad

I come from import world where harness tucks and that sort is the norm. I havent personally done one......so this will be fun. Best thing I can figure is pull harness......and yank whats not needed. Like you said. Didnt know if there was a DIY. Thank you!

bonylad

Thanks all and keep the comments coming!

thewhitestripes

Just finished and tpi to carb swap and at first glance it looks good but if you snoop aroun the engine bay a little you'll find ends of wires taped off all over the place. I tried to bunch them together and hide them but if you have the time I'd pull the whole thing ad just leave what you need. My irocs my daily diver so I had to get it back on the road ASAP but eventually ill go back and do it right.

thewhitestripes

The only thing in that article about your harness just tells you to pull the ECM, light it on fire and dance around it naked so idk if that's the best place to start.... Lol. It helps with the actual swap procedure though.

bonylad

Its not lol....I was being courteous for the help being offered. OP was nice and tried to give me more than the "just search".

pancherj

I just finished "cleansing" my harness. Wait until you see the pile of wires and loom in the garbage when you are done!

thewhitestripes

Hahaha oh ok, I actually used that exact write up for my swap. It's very helpful.

thewhitestripes

You have any pics of the current harness? I could use the help. Does the fuel pump run off the ECM? I left my in tank pump in and added a regulator. Will it still prime and run with no ECM?

pancherj

I'll try to get a few pictures this weekend. There isn't much to see...just a bunch of bare wires for now. I bought new fabric loom and need to re-route everything. I haven't changed anything with the fuel pump (my ECM will still be there, just fewer wires coming out of it). I am not 100% sure about the fuel pump circuit. I think it needs key-on power, battery power, a ground and also a loop that runs through the oil pressure sensor. I haven't messed with any of that.

3rdgenmaro

iTrader: (9)

You dont have to have the ECM to run the fuel pump. I would have to look to be certain of all the details, but pancherj sounds right. I know I have mine through an oil pressure switch and I also wired in a spring toggle to use as a primer or so that I can adjust float levels easy.

I know my earlier post wasnt very helpfull, but some people really hack the wiring harness and makes the swap look terrible.

bonylad

No problem. lol. Ive pulled the harnesses under hood and havent cut anything except some grounds and hot wires for distribution which will be reconnected. All of it was unplugged. I plan to strip the harnesses down and lean it out to whats needed for the bay harness....and wrap them both in some black nylon weave sleave stuff....heatshrink the ends and blamo!

shawnrs

i swapped my 87 bird to carb a couple years ago and im just getting to cleaning up the harness here is a pic of what i have removed so far i am almost done with the passenger side of the engine bay.

the moral of the story is most of it becomes trash when you do a carb swap lol