FE-FC Holden Discussion Forum

G'day to all.I am removing the wiring loom from a vr commodore.Does the loom come out thru the front of the car or does it go thru inside the car.I have  pushed the black bung inside the car i need some help.thanks gazza.

If its the left hand (pas,side) loom it comes out the engine bay side.(drive side) you may have to get a little creative,but that side comes through the cab,eg all relays pulled apart seperately,and a surgical incision to open it a little more.

Thanks philwreck.will have a go at it tomorrow.damm thing is a pain in the butt.it is the right hand side i am trying to remove thanks gary.

Hi all i am having problems getting the main fuses thru the hole in the firewall.any ideas >:(Thanks gary.

Hi Gary;
You have to basically unplug everything from the relay panel and the main fuse panel to get it through the hole just make sure you label the wires so you know where to reconnect them.

regards
Neil H

spoke to autoelec and he said i don't need all of the loom to wire the v6 into my car.I only need the computer side of the loom and wire it in.does anybody know how it is done.thanks Gary.

Hi Gary;
Your Autoelec is only basically right; you do need some of the wiring, there are six of the relays and fuses that you need to connect into your FC's wiring (that is if you have any wiring) in the end I found the easiest way was to purchase an already modified loom, the one I purchased was a V6 Conversions loom, Pat provides the required relays and fuses, it plugs into the original plugs and only 6 wires have to go through the firewall to your system, I did the wiring on my car and found it relatively easy doing it this way.

I am doing a ute at the moment (FB/EK) and didn't have any trouble removing the wiring loom from the VP donor so I'm not sure why there was so much trouble.

I'm sure there are other looms around and some of the other guys will be able to tell you where to get these; I assume CRS have modified looms as well.

Regards
Neil H

Hi all thanks for you input Neil.I had to hack at the firewall to get the loom to go thru the firewall.I rang pat at v6 conversions today and i need the under bonnet and under dash loom.The price was around $370.00.He also told me i need a bcm module as well which runs the vats vehicle anti-theft system which is another $300.00  :o It connects to the computer to disable the vats.thanks Gary.

Hi Gary
Glad you got some clarification I use the late VN VP units so I don't have the hassle with what you are dealing with.
The prices may sound a bit expensive but it will make your life easier I think.
Good luck and ask more questions as you go if you have anymore issues.
Regards
Neil H

Just to add a few things here, I've done several of these conversions.

You don't need any of the wiring from the driver's side, underdash or otherwise.

Simply disconnect the ECU & pull that wiring thru to the engine bay, there is one other small plug to disconnect there as well. Unplug the engine harness at the fusebox & battery, while keeping the entire & the starter & earth cables with the engine.

Most conversion harnesses, including Pat's will plug into that.

On the immobiliser side, you don't need a "BCM module" which "runs the VATS". You just need your mem-cal (chip) reprogrammed to eliminate the VATS, or you can get an exchange mem-cal to do the same thing. I prefer the re-programming option, which is usually cheaper & then you keep the original chip program which matches your engine.

FireKraka siad:- "I use the late VN VP units so I don't have the hassle with what you are dealing with."

I always find this comment a bit odd. Why buy an engine from a much older model which most likely has more kms on it, when you can get a VT (with sequential injection) which is a much better motor, just to avoid doing the VATS fix, which costs so little, relatively. 

I recently fitted a 195 kW out of a written-off VT Clubby, complete with auto trans to an HQ Monaro. It drove so much better than the earlier one I did with the VP engine & trans.

Dr Terry

Hi Dr Terry
To answer your comment about what I said
I believe it is called customising for a reason it's what you want to do not what everybody else has done or is doing otherwise all our cars would like the same.

I like to use the older engine because I don't like the look of the top of the newer engine it has an ugly plenum and the alt sits really high yes they develope more kW but that's not what it is all about to me.

I'm glad you have had success with the later model engines and happy with how it drives just like I enjoy my conversions, each to there own.

Regards
Neil H

Hi to all Dr Terry Neil.I rang v6 conversion and order the loom that was needed.I did not  buy the BCM Which was going to cost $300.00.I will take the computer to a autoelect. to see if he can do the VATS. Or do i have to take it to someone else.I like the look of the later model engine they look better than the early commodore engines.The only reason why i used the vr is because i brought the car cheap.Thanks for the advice guys.Thanks Gary.

If you like the look of early engine that's fine, but what I said applies to the VR engine as well. There is no reason to disregard the  VR V6, just because of the VATS issue. I'm sure, given the relative age of these cars you would have a better choice of good low km engines if you include the VR in your search.

A VR V6 & auto are also better than in some areas, than the older VN/VP units.

Dr Terry

Edit

Hi to all there is a guy on ebay who is selling memcals with out VATS for $75.00.Might go with that.Or should i stay away from ebay.He goes under the  name of trx100.Anybody heard of him.Thanks Gary.

Gary. Open your PM.

Hi to all.rang pat Gardner today and cancelled the loom.He told me i needed to have his BCM as well.$700.00 is a bit much to pay for.  >:( >:(Dont know what i am going to do now about the wiring.Thanks Gary.

Hi all.I spoke to a autoelec today and he said to use the loom and computer from a vn-vp  and i dont need anything else. >:(.So why do i need the v6 conversion under bonnet and under dash loom :(Thanks losing the plot Gary.

It simplifies the amount of wiring you need the V6 harness reduces the number of relays and fuses in the bay.
Regards
Neil H

why is the autoelec telling me i dont need anything else and someone else says i need more loom >:(Thanks Gary.

The V6 Conversions  engine bay loom is a simplified loom that does the basics and connects to a standard interior loom. They sell emulators to replace the pcm if im not mistaken. If you've ripped the full loom out of a donor you csn use the pcm/bcm setup easily. Hopefully you spent a good amount of time labelling everything! Good luck. Don't forget to connect all those little earth wires you find everywhere (thanks to nes304 for the lessons).

Mate exactly what longman said maybe I didn't explain myself properly, sorry about that. It is not that you need more loom but actually less than the original because your FC does not need all of the extra bits of wiring that comes with a standard commodore loom.
By all means use your existing loom and save some money.
Regards
Neil H

G;day to all.wiring all sorted.thanks nes-304 for vats sorted.Can someone tell me what size hole do i need to drill in the passenger side fire wall to fit the commodore wiring threw.I forgot to check the one on the vr.Thanks Gary. 

I think I used 64mm but that was for VT.  Grab some cheap verniers and measure your wires diam

Hey Gary;
I have the VP loom on my bench for my fb/ek ute I will measure the plug tonight when I get home and let you know tomorrow.

Regards
Neil H

G;day all.Thanks NES and Neal once i know the right size i will buy the hole saw and drill the hole ;D cheers Gary.

Hi all i have put the v6 conversion wiring loom in my car the trouble is the car wont turn over there is power to starter motor and alternator power to fuse box but no power to dash the v6 loom comes in two parts which are under bonnet and under dash loom i have power to under bonnet but no power to under dash anyone had this problem using v6 conversion loom  >:( >:( thanks Gary.

I have a VN in one L model Vauxhall and a VP in the other and just did a VX in a HJ ute . I am struggling with how much wrong information is out there . Haydn