Too Cool for School Bro!

That looks an Amazing Job but what are KB wires?

 

Cheers mate.

If you look back further in the thread it will make more sense but the KB wire is the wire common to all the injectors. KB = Pink/Black in Lucas Terminology. I adopted the name for my "KB" wire but I just used plain pink as it was all I could get.

Check out the print down the bottom and you will see. It is switched through at the left, goes to each injector then back to the ECU on the right.

So basically you have voltage on one side of your injector coil ready and waiting as soon as switch 312 is on. Then, the circuit is complete once you get a firing pulse from the ECU (one of the other 4 colours) which will energize the coil inside the fuel injector for the specified period of time.

 

Fantastic job Paul. Where did you get those dinky little "1A" etc labels? I have 10mm diameter HT leads for which there seems to be nothing commercially available, and I would love to nerd some ID labels on them like those on your harness. Sad, I know...
Greg

 

Well done Batman.

Soooooo when the 2nd V12 arrives, you will be in your element???????, AND have all the info to sort it quickly.

 

2nd V12........ are they expecting...

Good Job Paul

 

Cheers for the comments guys

Greg they are simply labels printed out from my brother label maker bud:


The tape I used was 12mm. I don't know how reliable they will be yet. They seem to only stick if I tape them back on itself. They don't stick to the heatshrink real well I guess as it isn't a perfectly flat surface.

[QUOTE]The secret is out Grant! How did you know my true identity? But nah, only room and time for 1 Batmobile at the moment!

No sadly no room for another kitty. I can still dream though!

 

Time will tell.

I once said that, and ended up with 8, and just kept adding room to the room, to the room, to the shed.

Now we are back to 2, and even looking at going to 1, OOPS, I have lots of rooms with nothing in them. Nothing is a lie, they are stacked with "stuff", mainly Jag related, but not limited to that brand.

 

Almost there I can taste it!

Today I got about 90% finished completion of the harness but then got called away with Husband duties like going to the dump and building a new bed for my boys. Anyway today's progress:

First up, I decided to add some extra protection to my boots by applying some self amalgamating rubberized tape to help keep out moisture:


Next it was time to put on the final pieces of braided sleeving. I had to make all my splice connections (rubber boots) slim so they would fit. I found it helpful to strap them down with insulation tape:


Next it was time to feed up the sleeving. It kinda swallows the cable like a carpet snake and you expand it to fit.


It is looking more like an EFI harness! Now to I have to run A & B bank together in the same sleeve:


After much heatshrinking and mucking around it was finally time for the final job. That is to splice the 8 wires into the existing connector. Before I did this I made up my own numbering system so I new what wires to splice to where by means of some masking tape labels:


The existing 8 plug bullet connector(notice the labels)


First splice done using my heatshrinkable solder crimps. I don't know if I like them yet. I set the heat gun to 270 degrees C and it seemed to melt the solder ok. Shrunk the heat shrink portion almost straight away at that temp. First one seems like the solder flowed. I bloody hope so! (Picture is before I melted it)


And....the delivery truck came for our new bed for the boys so I had to press pause again for the day...

Tomorrow I will finish the harness and then it will be time prepare the engine bay, do a few little chores under there, put my ignition leads back and yes, finally plug in my EFI harness.

To be continued....

 

Paul
Are you sure you have not slipped in a V16? In the first pic there seem to be about 8 or 9 connectors on the B bank side!!
Great work
greg

 

Job coming along and looking great, like I said before, take your time and it seems to come together quick.

 

That looks 'Lit' Bro! almost time for a Start Up!

 

Ha ha ha.....that is a keen eye Greg....but that is just my old harness underneath

 

Getting close there, she'll be back on the road before you know it.

 

Lots of progress today and I have finish building the harness

First up it was time to finish off the dreaded splice. Had to make sure those solder heatshrink crimps bonded properly and kept an eye on them to make sure the solder flowed. Then gave it a "tug" test:


I noticed the transparent heatshrink was a little thin and observed 1 or 2 copper strands "poke" through. As an added layer of protection I wrapped each join in insulated electrical tape:


Then it was time to slide the sleeve up and heat shrink the final piece and..."wella"


Now...onto the engine bay:

First things first. Do away with this plug as all it was doing was using the centre cable going to earth with the two outside wires cut off since I bought it. (Still not sure what this used to be).


I just cut the middle wire out and crimped it into a ring lug, and connected it to a nearby earth. Confirmed it still goes to the chassis using a multimeter on ohms.


Next it was cleaning up some of the wiring underneath my throttle capstan. Can anybody tell me what this device is? The crimp lug on it was very loose and I decided to fit off another:


Next it was time to cut back my very brittle Temp Sender wire and run some new GXL. I had to cut it back to where it stop being brittle:

This was the old wire!


The A/C compressor wire was the same and it ran along side it. I cut it back and ran it a braided sleeve similar to what I did with my EFI harness. I just tied it onto the fuel rail:

Before the cable ties:

The Temp Sender:


Also I had to fit back my A/C compressor. Making sure underneath it was clean and also time to fit ignition leads 1A & 1B as well as labeling them with my label maker(as the bloody supplier had them all labeled wrong):


Then it was time to tidy up some old wiring by the compressor (still have to tie it back)


Finally for today I put the belt back and around the idler pulley and tightened it up:



Tomorrow I am out all day so Friday I will continue. Next up is to start placing back the rest of the ignition leads and then mount the throttle capstan and coil back. After that i will lay the harness over and tie it to the intake manifold (I think) and then....getting very close to turning the key...

 

That is the oil pressure sender

 

Paul
Lovely work. Just one comment of possible warning: That earth wire you have rigged up does not look foolproof enough for me. It would be safer to earth it directly to the body, not via the wire clip which is plastic, on your earth, only the self tapper is carrying current. Maybe grind a little spot of bare metal somewhere nearly, then screw the round earth connector directly into that with a nice stainless self tapper? Great work on the crisp wires to the aircon and the temp sender. by the way.


I hasten to add I know sod-all about the system intricacies, but it is just possible that something in the ECU needs to know that the injectors have been triggered and that the earth wire that previously went into the loom, provides that signal before earthing via the ECU. Worth checking the wiring diagram carefully/asking the WoOz or Warrjon before trying it out. It would be a shame to fry something, especially that lovely new ECU.
Greg

 

There is no earth in the engine bay for the injectors, these are only grounded via the ECU.

My guess - that earth wire is for the sensors CTS ATS, TPS etc. The ROM is not specific enough.

 

Fantastic Job Bro!

Absolutely Amazing! Well done!

So I will have no hesitation in Contacting a certain person and recommending you for a Certificate of Engineering Excellence.

 

I am a bit confused here. I thought that Paul had said that the wire and the second smaller plug came out of the injector loom bundle. I certainly thought that it was plugged into the main loom. Can anyone explain it to me so I get the point?
Greg

 

Cheers for the feedback guys and thanks for verifying a few things.

Warrjon...the oil sender! Cheers. I wondered where that lives.

O.B your comments are kind but it wasn't too complicated...just took a bit of time between the rush and being Dad's taxi running around 3 little Gremlins trying to find a spare moment in my shed. I tell you...4 weeks off sounds heaps but I only have about a week left before I am back to again!

Greg, I am a little confused also. That plug was tied in with the injector loom and resistor pack harness. It came out where the EFI harness plugs in. When I traced it out it was only using the middle pin of the 3 pin plug. The other two wires were just cut off. Somebody has spliced two wires both going out to each side of the intake manifold.

From here what is weird as each wire was "dead ended" and they ended up bolting to my intake manifold near the firewall as an earth.

A bit of a mystery. Perhaps it was part of the old emissions equipment?