Wiring !!?!?!?
 

Well ive pretty much finished the exhaust, so thought id get started on the wiring today. I was usinng the sierra wiring diagrams from the haynes manual, but!!! its soo confusing. I fistly tried connecting up as many of the connectors as possible, and then asses what needs to be removed from the loom, but its so frustrating as looking at the sierra wiring diagram i have is no help whatsoever, especially once everything is connected i end up with too many connectors of which i dont know what to get rid of., and added to the fact i didnt make it easy for myself when my sierra was tkaen apart by labelling/indexing the wiring properly, i am throughly baffled. I dont want to buy another loom from svc or the premier ones, and from reading other threads it seems very do-able to modify the original sierra loom, but when i see a loose connector, i have no idea what it is meant to go to originally, so dont want to get rid of it. I have no idea which ones go to the lights either as i dont remember from when i stripped the loom out originally. :mad: :mad: ahhh... i cant stand how frustrating this is!!!:mad:

I dont know how i can do this.. is there any picture assisted wiring diagram out there(unlikely) or somthing that might make this easier?????:(

Could'nt help smiling when I read your post....
Not because it's funny, but because I've been there...:rolleyes:

Drove me to Bl***y distraction.
The only advice I can give is get the engine wiring sorted first.
Then worry about the lights and stuff.

David

Simple diagram Pinto engine

I started off this morning at arond 10 and withing 20 min was banging my head against the engine crane trying to get my head around it. I sectiond off the loom by poutting each diferent part of it in plastic bags, which makes the whole thing easier to handle. i was doing the engine bit of the loom today, but as i have almost no memory of what the loom was like in the sierra, i was struggling with the engine bay connectors, the thing is the thing is the sierra haynes wiring diagrams would have been more helpful if i know what certain things on the diagram were, i look at the key to find the name of the part the wires should be going to, but then have no idea what that part is meant to llok like or where it is located on the engine. At least ford use diifferent connnectors for everything, but it does make me feel like a 2 year old just trying to solve those toys where you have to put the triangle in the triangle slot and the square in the squares slot.:( :rolleyes: :rolleyes:

Thanks,

..... if only it was as simple as the diagram makes it out to be:rolleyes:



I understand that it should be quite easy thoretically(famous last words:p ), becase as the book says, theres not much that is actually needed in the roadster in terms of wiring, but theres too much crap to offload from the loom to make it so simple.

Geeman, if you post some photos of connectors or pm them to me I will identify them for you, I have many years experience of Ford wiring looms & should be able to help you sort it out, Thanks, dennis.

I usually use these from Westfield world, simple and easy to understand.

Cheers

Chris :)

I hung the wiring harness on the garage wall laid out as in the car, then starting at the fuse box identified each circuit and removed them. Check, check - cut!
Having it bundled up in separate pieces is no good as you will keep going over and over the same bits.

What I was left with was an overlong basic loom that I could lay on the chassis and route effectively.

I know the wiring diagrams are confusing as they are individual I found it quite easy having it laid out and learned a lot along the way about the circuits and how they work.

Steve:)

I did my Sierra loom by fitting it into the roadster, and then removing a circuit at a time. I did however label all of the connectors as I removed it in the donor.

I was worried about cutting something out that I shouldn't. By having the loom in the car I could check light functions, and start the engine every so often to make sure I hadn't removed a circuit I needed.

As said before post up some pics of the connectors & we might be able to id them for you. What engine are you using?

Mark

Ahh, i had seen that westfield one before, but i was using mozilla firefox and the text on the pic was coming up as hashes.. but i used internet explorer this time and it works...:rolleyes:

once youd undone the loom tape and layed it out, is each circuit seperate coming out of the fuse box, as i guess i could just look at what fuse it is going to in the fuse box and remove that part of the loom...

hmm... that made it sound much easier... off to the garage i go...:)

Im using a 1.8 carb cvh. i think ill try what coozer said and go fromt he fuse box and firstly remove the bulk of the loom as it will largely be in seperate circuits.

i dont yet have any lights, but the thing is there are around 8 unconnected connectors just on the engine loom that im abit confused what they originally went to that i dont have on the car right now.:confused:

cheers,
geeman

Be careful if working from the fusebox. You could have more than one circuit connected a fuse.

Always worth a double check with the wiring diagrams. They will start to make sense.

If you have connectors that your not sure what they do, you could trace them back through the loom to see where they go. I did this with a couple of mine. I didn't have that many spare in the engine bay that I can think of. Put up the pics and I will see if I can tell you what they are.

Mark

thanks mark,
oone last thing if anyone knows, where can i find a diagram of whats what in the fuse box as i have lost the fuse box lid with the diagrams and cant find a fuse box diagaram anywhere??

Have you got a Haynes manual for the sierra?

If so page 13.50 give a list of the fuses along with their rating and the circuit they control.

If not pm me your email address and I will get my mate Dave to email them over to you.

Mark

cheers, the page was sitting right in front of me, but yet i missed it, i was reading that earleir but didnt remember that was the fuse box locations...dopey:o
ive started with the interior lamps,clock door locking ans mirrors bit... so far so good.. but there's so much loom tape on it:eek:

Just to give you an idea. Have a look at the pic I attached in an earlier post. This is just a pile of bits I removed from the loom. I have since added to this pile with all the unsed relays and fuses. I have even removed all the unused relay holders & fuse connections from the fuse box.

I wanted to make the loom as simple as possible, if I ever need to do any fault finding.

Mark

http://www.haynes.co.uk/forums/attac...4&d=1253789382

how much of the loom is actually left after wards??:eek:

Also, is there somewhere i can find out what each relay is for?

One other thing if using the sierra loom.
As standard you can turn the foglights on with just the side lights.

If you look at AdrianH post about his IVA failure, this was one of the things his car failed on.

You will have to add another relay and some power feeds / earths etc to make this only work with dipped & main beam. I am currently in the process of carrying out this mod along with shortening the loom in the engine bay.

Mark

uhhhh...!!! for the past 3 and a bit hours ive been doing this. the wiring diagrams now makje sense, aprt fromt he fact its not identical to my loom. for example, the speaker wiring is completely different to what the diagrams say(unless ive been cutting off the wrong bits:o ) Im no where near done, but its slowly getting there.

How many wires should be going to the rear of the car once you are done?

also id you see a connector/relay that is not needed, do you just snip it off, then find where the leads on it go to and then cut them off from its source?

To answer your question about how much loom is left afterwards. About the same as you remove!!

From memory there is still about 14 wires going to the rear of the car.

As for relay id's look at pages 13.51 & 13.52.
For example:-

Item 17 Auto Trans Relay XII - ie relay 12. You will see a XII in the fusebox next to the corrisponding relay.

I did it the other way to you. I had a part I didn't need. Such as rear wiper. Followed wires back to switches / fuses / relay etc and cut off.

Speaker loom was a seperate loom in my car. Only cable tied to main loom. Just cut ties, didn't have to cut any of the speaker wires, removed the loom whole.

Mark

:( .... i should have realised the roman numerals would have meant somthing:o , ahh well, instead i looked at the bottom, found the relay that matched the wire colours according to the wiring diagram and then worked from there....

I fear that i have made a mistake though, because i think ive cut off some fog light bits... i guess ill have a better look another time as im knackered from it as its not very enjoyable