Mystery wire behind instrument cluster

Technical advice Q&A
User avatar

Topic author
E-typeguy
Posts: 27
Joined: Fri Dec 02, 2016 6:13 pm
Location: Tennessee - The Volunteer State
United States of America

#1 Mystery wire behind instrument cluster

Post by E-typeguy » Tue Jan 24, 2017 4:45 am

Hi Gents,
Attached are 2 photos....I need help identifying a "loose" wire......The vehicle is a "72" Jag XKE , Series III, V-12.
The wire in question is the green one pictured with a 5 amp fuse in between, and white cloth type on the other end. The connector at the end of the white wire is a female spade type. I've checked my wiring references on hand and can't seem to identify it. Along with this "loose" green-white wire , there is also a brown/purple wire. From I understand, it powers the electrical radio aerial/antennae....which I do not have. Any help is greatly appreciated.
Thanks,
Wes

P.s...the yellow wires pictured are what the previous owner installed...some type of manual fan override circuit which leads to a toggle switch mounted on the center console, just right of the drivers leg. Another enigma to solve.
Attachments
IMG_0492.JPG
IMG_0492.JPG (45.26 KiB) Viewed 3318 times
green-white wire , brown purple.jpg
green-white wire , brown purple.jpg (211.69 KiB) Viewed 3321 times
Last edited by E-typeguy on Tue Jan 24, 2017 4:00 pm, edited 4 times in total.
1972 Jaguar XKE coupe - Series III

Link:
BBcode:
HTML:
Hide post links
Show post links


Gfhug
Posts: 2148
Joined: Thu Jun 19, 2014 3:08 pm
Location: Near Andover, Hampshire,in D.O. Blighty
Great Britain

#2 Re: Mystery wire behind instrument cluster

Post by Gfhug » Tue Jan 24, 2017 8:51 am

All I got when opening those links is an encouragement to get outlook mail, no photo

Always best to go to the photo posting advice to get them to show
Last edited by Gfhug on Tue Jan 24, 2017 8:52 am, edited 1 time in total.
S2 FHC Light Blue
S2 OTS LHD - RHD full restoration

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

mgcjag
Moderator
Posts: 5663
Joined: Fri Jul 09, 2010 6:15 pm
Location: Ludlow Shropshire
Great Britain

#3 Re: Mystery wire behind instrument cluster

Post by mgcjag » Tue Jan 24, 2017 8:52 am

Hi Wes...cant view the photos...it asks us to sign up
Steve
1969 S2 2+2 & Building a C type replica

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

vee12eman
Posts: 676
Joined: Mon Nov 26, 2007 7:14 pm
Location: Down South
Kiribati

#4 Re: Mystery wire behind instrument cluster

Post by vee12eman » Tue Jan 24, 2017 1:30 pm

Hi Wes,

Like others I could not view the photos, look up how to post photos which was covered elsewhere. From the sounds of it, I guess the green white wire may be an addition to allow radio connection, but I would have to see a picture for a better clue. The power aerial wires are included in the S3 loom, even if not equipped with one from new. From memory the long cable down to the rear right wing (RHD) is fitted but I had to make a link wire to connect the dash end to the fuse terminal.

I fitted a fuse in my aerial line maybe this is the green/white cable you are looking at?

Anyway, post a photo we can all see

Regards,

Simon
Simon S-Y
Series III FHC

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

Topic author
E-typeguy
Posts: 27
Joined: Fri Dec 02, 2016 6:13 pm
Location: Tennessee - The Volunteer State
United States of America

#5 Re: Mystery wire behind instrument cluster

Post by E-typeguy » Tue Jan 24, 2017 4:02 pm

Hello,

My apologies for the photo "snafu"......I went back and amended the original posting... Photos should be displayed ..... I hope ...... :scratchheadyellow:

Please tell me your thoughts. Thanks again.

Wes
1972 Jaguar XKE coupe - Series III

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

rossbraithwaite
Posts: 139
Joined: Mon Jan 24, 2011 8:27 pm
Location: The National Forest
Great Britain

#6 Re: Mystery wire behind instrument cluster

Post by rossbraithwaite » Tue Jan 24, 2017 4:10 pm

Could it be related to the radio? I had a similar search for a similar part on my S1.5.
viewtopic.php?f=3&t=9032&p=70865#p70865
'67 S1.5 FHC, manual, maroon with black interior. Originally exported to Arizona but 'repatriated' in '89. Since converted to RHD and triple SUs.

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

Topic author
E-typeguy
Posts: 27
Joined: Fri Dec 02, 2016 6:13 pm
Location: Tennessee - The Volunteer State
United States of America

#7 Re: Mystery wire behind instrument cluster

Post by E-typeguy » Tue Jan 24, 2017 4:26 pm

Well....my radio works fine...as well as one can expect for a stock version that is 45 years old.
I just cant seem to locate what or where the green-fuse-white wire connects to... I've checked all the vacant male spade connections, none show any markings of having anything connected. Could anyone confirm my thoughts of the brown/purple wire being associated with a powered aerial/antennae ? Thanks again.
1972 Jaguar XKE coupe - Series III

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

mgcjag
Moderator
Posts: 5663
Joined: Fri Jul 09, 2010 6:15 pm
Location: Ludlow Shropshire
Great Britain

#8 Re: Mystery wire behind instrument cluster

Post by mgcjag » Tue Jan 24, 2017 5:03 pm

Hi Wes....do you have a wireing diagram....... heated rear windscreen should be a white to an inline fuse
also an inline fuse to the the radio on white/pink......inline fuse to aerial motor relay brown in to fuse out on brown/purple via snap connector.............inline fuse in brown to air con relay
Steve
1969 S2 2+2 & Building a C type replica

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

Topic author
E-typeguy
Posts: 27
Joined: Fri Dec 02, 2016 6:13 pm
Location: Tennessee - The Volunteer State
United States of America

#9 Re: Mystery wire behind instrument cluster

Post by E-typeguy » Tue Jan 24, 2017 5:30 pm

Yes sir,
I have a few wiring diagrams. I will go back and review. Maybe I overlooked something.
1972 Jaguar XKE coupe - Series III

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

mgcjag
Moderator
Posts: 5663
Joined: Fri Jul 09, 2010 6:15 pm
Location: Ludlow Shropshire
Great Britain

#10 Re: Mystery wire behind instrument cluster

Post by mgcjag » Tue Jan 24, 2017 5:37 pm

Hi Wes....the only white i can see to an inline fuse is to the heated rear screen.....the diagram shows it as in the dash as per your location but shows a white out of the fuse.....check to see what colour goes to the rear screen switch
Steve
1969 S2 2+2 & Building a C type replica

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

Topic author
E-typeguy
Posts: 27
Joined: Fri Dec 02, 2016 6:13 pm
Location: Tennessee - The Volunteer State
United States of America

#11 Re: Mystery wire behind instrument cluster

Post by E-typeguy » Tue Jan 24, 2017 6:21 pm

Hi Steve,
On the diagram I have ..it shows a white wire with fuse running in to the rear glass heater switch, a black/white wire running out and into the rear glass heater element/defroster terminating to a ground/earth. I am at work at present. I will see what is actually on my car. I am sure with everyone's help that we will solve the riddle.
1972 Jaguar XKE coupe - Series III

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

abowie
Posts: 2956
Joined: Wed Sep 07, 2011 9:15 pm
Location: Australia
Contact:
Australia

#12 Re: Mystery wire behind instrument cluster

Post by abowie » Tue Jan 24, 2017 10:13 pm

Do you have a heated rear screen? The white spade end would go to the fuse block. If it is disconnected then there there is no power in the wire anyway.
Andrew.
881824, 1E21538. 889457..oops. Jezza the V12 XJS race car.
http://www.projectetype.com/index.php/the-blog.html
Adelaide, Australia

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

Topic author
E-typeguy
Posts: 27
Joined: Fri Dec 02, 2016 6:13 pm
Location: Tennessee - The Volunteer State
United States of America

#13 Re: Mystery wire behind instrument cluster

Post by E-typeguy » Tue Jan 24, 2017 11:01 pm

Yes Sir,
There is a heating element in the rear windscreen hatchback. I will check for power at the switch and element with a volt/ohm meter. Hopefully this will solve the issue. We shall see.
Thank you.
1972 Jaguar XKE coupe - Series III

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

Topic author
E-typeguy
Posts: 27
Joined: Fri Dec 02, 2016 6:13 pm
Location: Tennessee - The Volunteer State
United States of America

#14 Re: Mystery wire behind instrument cluster

Post by E-typeguy » Wed Jan 25, 2017 4:59 am

Well, I checked the wires at the "demister/defroster" switch both are present/connected and there is power to the switch as well as to the rear windscreen heating element......Looks like the search continues....... :scratchheadyellow:
1972 Jaguar XKE coupe - Series III

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

mark10337
Posts: 751
Joined: Wed Jul 22, 2015 11:11 am
Location: Switzerland
Switzerland

#15 Re: Mystery wire behind instrument cluster

Post by mark10337 » Wed Jan 25, 2017 8:39 am

Take the fuse out and see what doesn't work.... :)
-Mark

1969 Series 2 OTS, Regency Red
'Life's to short to drive a boring car'

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

Topic author
E-typeguy
Posts: 27
Joined: Fri Dec 02, 2016 6:13 pm
Location: Tennessee - The Volunteer State
United States of America

#16 Re: Mystery wire behind instrument cluster

Post by E-typeguy » Wed Jan 25, 2017 3:32 pm

Hi Mark,
The wire was already disconnected. I am trying to locate its connection point...if it has any. At some time in its past ,a previous owner did some "work" behind the gauges and switches. I'd like to know what this wire is for ( green-fuse-white).
1972 Jaguar XKE coupe - Series III

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

mark10337
Posts: 751
Joined: Wed Jul 22, 2015 11:11 am
Location: Switzerland
Switzerland

#17 Re: Mystery wire behind instrument cluster

Post by mark10337 » Wed Jan 25, 2017 6:01 pm

If it's from a PO it shouldn't be too hard to follow the wire. Easy enough to take off the under dash panels to see where it goes. if it goes into an original loom, then find which one it is and follow that round. There are not many other options unless you know where the other end is.
-Mark

1969 Series 2 OTS, Regency Red
'Life's to short to drive a boring car'

Link:
BBcode:
HTML:
Hide post links
Show post links

Post Reply Previous topicNext topic