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#550970 - 31/12/18 08:09 AM circuit diagram +8
Robbie Mathisen Offline
L - Learner Plates On

Registered: 31/08/17
Posts: 114
Loc: Bergen, Norway
A good friend mine mine recently bought a +8, but unfortunately has the problem described below. So far not a member of TM (awaiting confirmation) he sent me the text cited below to post, hoping for some solution. We both will be grateful for your help.
"Gentlemen. I have +8 produced in mid1995 with electrical problems. The only circuit diagram I have found on the net is one from 1990-91.(valid to 2004).
However, the wiring colour code on this diagram is different to the one found on the 1995 car. In particular the leads from the inertia swich to ignition bus and fuel pump. On the car leads are purple/white while on the diagram they are white/yellow. The fuse box argm. is also different from the 1990-91 set up.
Anyone who has a lead to where a correct circuit diagram for the1995 +8 can be found?"
Regards,
Robbie and Jarl
_________________________
Robbie
2004 V6 Roadster
Sherwood green

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#550977 - 31/12/18 09:31 AM Re: circuit diagram +8 [Re: Robbie Mathisen]
MOG 615 Offline

Has a lot to Say!

Registered: 24/09/14
Posts: 1387
Loc: London
Robbie

There are 2 basic circuits for the Hot-wire +8 , one is the ecu/fuelling and the other is the rest of the car (lights etc)

I have something around but I am not at home currently and will need to research it when I return , but will get back to you .

Godt Nytt Ar
_________________________
Andy G
1999 +8 , Indigo Blue.
Ex-John McKecknie/Mike Duncan 1955 +4 racer.

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#550979 - 31/12/18 09:40 AM Re: circuit diagram +8 [Re: Robbie Mathisen]
John V6 Offline

Member of the Inner Circle

Registered: 21/07/07
Posts: 13286
Loc: Suffolk
This claims to be 1990 -98 for all models
http://www.gomog.com/allmorgan/wiring1990on.html

Also GoMog has a specific +8 section.
_________________________
JohnV6
2006 Indigo Blue Roadster S1

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#550987 - 31/12/18 11:44 AM Re: circuit diagram +8 [Re: Robbie Mathisen]
MOG 615 Offline

Has a lot to Say!

Registered: 24/09/14
Posts: 1387
Loc: London
Thanks John

The one I have is slightly different and mainly concerns the dashboard. It is for a 1999 car , but may be applicable . However I will have to upload it to the TM library first so it can be viewed by all, which will take me a little longer.

https://www.tm-img.com/image/YdNtO


Edited by MOG 615 (31/12/18 01:27 PM)
_________________________
Andy G
1999 +8 , Indigo Blue.
Ex-John McKecknie/Mike Duncan 1955 +4 racer.

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#550995 - 31/12/18 01:24 PM Re: circuit diagram +8 [Re: Robbie Mathisen]
Robbie Mathisen Offline
L - Learner Plates On

Registered: 31/08/17
Posts: 114
Loc: Bergen, Norway
Thanks to both so far.According to my friend he has been through the various websites without result. Of course something might have eluded him, so I will forward what I got till now. Any other hints will be appreciated. What a nice and helpful this community is!
Godt nytt år fra Norge!
Robbie
_________________________
Robbie
2004 V6 Roadster
Sherwood green

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#550997 - 31/12/18 01:41 PM Re: circuit diagram +8 [Re: Robbie Mathisen]
MOG 615 Offline

Has a lot to Say!

Registered: 24/09/14
Posts: 1387
Loc: London
Robbie

I just looked at my car and there are 3 wires going into the inertia switch.

The 2 larger ones are white with purple tracer , the smaller one is grey. Looks like your friend has the same wiring as I do.

As far as I know the fuse boxes changed a lot as more electronics were added to the car, and some owners modified them for their own needs , so that is not altogether unusual.
_________________________
Andy G
1999 +8 , Indigo Blue.
Ex-John McKecknie/Mike Duncan 1955 +4 racer.

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#551039 - 31/12/18 04:44 PM Re: circuit diagram +8 [Re: Robbie Mathisen]
teknome Offline
Just Getting Started

Registered: 26/10/07
Posts: 95
On my 95 +8 the inertia switch is wired so that

In normal position the power feed goes to the pump.

When the switch is activated the power feed to the pump is broken and power is now fed to a lamp in the cluster above the steering column.

That is why there are three wires.

Took me about 10 years before I tested the switch and found the warning lamp on

Originally I thought that lamp was a MIL light, but have found the MIL light feed from the ECU isn't wired. I have modified the ECU code and wired up a MIL light, but that's another story
_________________________
---------------------------
Mike Smith


1995 +8
2007 +4

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#551067 - 31/12/18 05:58 PM Re: circuit diagram +8 [Re: Robbie Mathisen]
teknome Offline
Just Getting Started

Registered: 26/10/07
Posts: 95

I just made a quick test to refresh the grey cell

The dashboard light cluster has two direction indicator tell tale lights side by side. Below that are 4 lights vertically arranged. The bottom light has the legend 'CHECK ENGINE' and if the inertia switch has activated, when ignition is turned on the light flashes briefly, then goes off for about 5 seconds, then it comes back on.

On the subject of wiring diagrams, I haven't found one that represents a 95 +8. For example, some of the diagrams, such as the 99 diagram posted above, show an led warning light cluster, and include a heated screen, neither of which are relevant to a 95 +8. So I use a mix of what I can find, and visual inspection. Also remember that the engine side uses a LR harness similar (or same) as that from a Discovery 1, so a LR Disco manual can be handy. There is some EFI wiring info on sites such as gomog (see earlier post) but there isn't one source containing all the information needed.

Do you know what problem your friends +8 is experiencing ?
_________________________
---------------------------
Mike Smith


1995 +8
2007 +4

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#551098 - 31/12/18 08:14 PM Re: circuit diagram +8 [Re: teknome]
BobtheTrain Offline

Charter Member

Registered: 15/04/14
Posts: 5223
Loc: Renfrewshire
Originally Posted By teknome
Originally I thought that lamp was a MIL light, but have found the MIL light feed from the ECU isn't wired. I have modified the ECU code and wired up a MIL light, but that's another story

Why would you want to light up your Mother-in-Law?
_________________________
Best Regards
Lang may yer lum reek

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#551445 - 02/01/19 08:35 PM Re: circuit diagram +8 [Re: Robbie Mathisen]
smudger1 Offline
L - Learner Plates On

Registered: 20/05/09
Posts: 175
Loc: Durham, UK
This is the wiring diagram you are probably after, the manual will also be an aid to help you resolve the issue you have Landrover Hot Wire Manual
_________________________
1999 Morgan Plus 8. 3.9 ....
1961 Alvis TD21 Series1 3 Litre Auto....

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