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Warning: dont use the factory wiring schematic. I have found too many errors, some critical like with the injectors. The schematic show blue 467's
connected to 468 green. All other diagrams show lt blues 467's tied together along with 468's tied together.
Not exactly sure what you are saying. All of my attached pica are out of my 1985 fsm. They match your pics except you did not include the schematic pull out at the back of the book, thats whats wromg.
1st image shows 'splices' as 'dots'. Is that what you meant? Tied together = Splice? 2nd image - What's wrong? The same 'splices' are in my post#2. What am I missing here?
OP - Do you have a large monitor? I stripped the diagrams from my '85 FSM and have just the diagrams in a file. I've removed all 'WaterMarks' and these if you're trying to use to 'trace' might do you well. You might need to 'tinker' a bit also with these but not much. I did an '87 FSM from a different vendor and it's maybe better but this is all I have for an '85. You can blow-up sections as large as you'd want!
Drop me an email and I'll supply it! Might help OR maybe you can point to the 'errors'!!
The errors are like you mentioned. (the splice dots). 467 and 468 do NOT connect in reality. Blues are together and greens are together. I ran the book schematic on a wide format printer and its clear they did not put the splice dots in the correct place. If you think I am wrong explain why the schematic is correct.
Poking around a bit more there does seem to be some errors not yet mentioned in the thread. Someone just bought an '85 ECM with the connecter pigtails so it might be interesting if you reach out to him and see how his is actually pinned. The splices would be likely just beyond the 'grommet' under the hood.
****Here's that thread. There's enough of the harness that if he wanted he could strip back and actually spot the splices.The snapshots don't appear to include an entire engine harness but maybe just beyond the 'grommet' under the hood.
Like i said from the start, the schematic is full of errors. Not the first ones i have found. Diagrams are correct because they show how the parts function. I even bought all data to see if they had a schematic, they dont. And the haynes manual is even worse. Any others our there?
My 1985 red book FSM shows lt blue to be D15 and D16 at the ECM. Lt green is D14 and C2.
I doubt that the harnesses are wrong. The diagram is. With all injectors disconnected (so the results aren't affected), there should be continuity at the ECM connector between both lt blue wires, and both lt green wires. The colors should go to the ECM cavities outlined above.
This is for 1985. I used a 1985 book. I was going to post a pic of the page, but my camera isn't cooperating. If it decides to take pics again, I'll add one.
I saw the C2 & D14 also and decided I didn't want to maybe confuse the thread any further so I just left it where it was. The C2 & D14 we saw I'd think is likely an error but ....... I did do an image of the C2 & D14.
*** Not long ago a fellow (long time owner) was upgrading his '85 ECM and he mentioned issues. The errors in the FSM might have contributed to his!
I was originally using the wire numbers (467 and 468)from schematic to build a harness. You guys have been using the cavity diagram which is actually better BUT only shows a few items. There are a few thousand other wires to make the car function, hence the schematic, shows it all, just need a correct one. I think the haynes is worse because they gave up trying to read the FSM schematic.
Not talking about the C1 connector being a zillion wires, I am talking about the WHOLE car from stem to stern. I was using the schematic to recreate all of the harness, inside and out. Actually about 90% complete and double checking, thats where I ran into the injector issue (along with issues in the past) but so far the harnesses are looking good. If I showed you pictures of all the wiring in the vette its scary. Someone really messed up this car by morphing it into a track car but forgot that this car is like a robot, its all electrical. It would be like taking a 2016 mustang and dropping a carbd 302 in it. Get a 72 nova if you want an old school car. I am the one guy in America that is saving a C4 from the junk yard. Only think the I am worried about is the ECU which I have but unknown if it works. Its the one thing that can keep frankenvette from running.
I have not come across a thread or article where someone has restored a C4 (would like to see one though)from the ground up and didnt have the all of the original parts. Most of my parts came from c3 and c4' s of different years in the junk yards. One time I did find an 85 like mine in the yard but it was picked over pretty bad, and it was an automatic. Never seen a manual car in the yard. Its like the Johnny Cash song, one piece at a time. I need the "A"dapter Kit.
I wonder if part of the problem may be that you have a "late" 85. They rolled out some of the 86 changes early and some of those aren't reflected in the FSM.
No its the Schematic, its a misprint. I recommend always using the diagrams in the FSM that shows the functions of components. In my case there were not enough diagrams to put all of the wiring together.
I love IHBD how he bashes people when he has never seen a picture of my car. Mechanically its pretty close to done, just need to connect all of the harnesses and do the complete fuel injection system which is ******* me down. Then by grace if it runs it will soon die and not run with a code 44 like the guy in the other post. I believe this is the reason someone chopped up my car in the first place and also brought me to the fork in the road about going with a carb. I think with a few of you techie guys on this forum, frankenvette might live again.
1985 FSM errors
