Electrical scheme

Technical advice Q&A

Topic author
Leo Wayaffe
Posts: 3
Joined: Fri Dec 28, 2018 9:53 pm
Great Britain

#1 Electrical scheme

Post by Leo Wayaffe » Fri Dec 28, 2018 10:37 pm

Most S2 E-type owners will know the electrical scheme

https://www.coolcatcorp.com/faqs/XKE_Se ... Wiring.pdf

Does anyone know what is the meaning of the encircled numbers 2 , 3 and 5 in the wiring towards the “Head lamps main beam” , “Head lamps dipped beam” and “Side lamps” . Are these physical connections in a junction box , terminals of relay , … ?
Since a number of days , both main beams and dip beams stopped working , as did the left hand side light (the right hand lamp still operates !)
All this despite measuring 12V reading at the fuses 1, 2 and 3 , and tail lights and number plate light working properly !
I’m quite puzzled
Anybody any ideas?
Leo

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cactusman
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#2 Re: Electrical scheme

Post by cactusman » Fri Dec 28, 2018 10:44 pm

I suspect the numbers you refer to are the pin numbers of the eight pin plug/socket that connects the engine loom to the bonnet loom in the left hand side of the bonnet....
Julian the E-type man
1962 FHC
1966 MGB....fab little car too

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johnetype
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#3 Re: Electrical scheme

Post by johnetype » Sat Dec 29, 2018 9:47 am

I suggest you've lost the earth (-ve, ground) for those items in the bonnet. They are earthed to the bonnet by a stud behind the N/S headlight by the connector block for the wires coming in from the 8 pin socket.
Checking and cleaning up that stud and earth continuity is the first thing I'd do.
John

1969 Series 2 FHC

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Topic author
Leo Wayaffe
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#4 Re: Electrical scheme

Post by Leo Wayaffe » Sat Dec 29, 2018 8:43 pm

Thanks , to all of you !
I managed to get the Lh side light working ( a bad light bulb , as simple as that …)
And I opened the 8-way plug : all connections of the wires to the female pins are in good condition , but still no 12V reading on pin 2 or 3 when switching on the lights , despite full 12V at the fuses 1, 2
As the flashers and the side lights are properly functioning , I suppose the problem is not with the (common) earthing (but what then ?)
Leo

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mark10337
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#5 Re: Electrical scheme

Post by mark10337 » Sun Dec 30, 2018 5:45 pm

check the switch for the lights, high beam and the bullet connectors for blue-yellow and blue-white cables in that area. you will eventually find where the 12v is getting stuck.
-Mark

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

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Topic author
Leo Wayaffe
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Joined: Fri Dec 28, 2018 9:53 pm
Great Britain

#6 Re: Electrical scheme

Post by Leo Wayaffe » Tue Jan 01, 2019 10:29 pm

Problem solved ! Or not ...? .
I did quite some checks with my multimeter , and didn't detected anomalies
As this involved quite some connecting /disconnecting , at a sudden moment I had again all things working
Not being aware of just what made the change , I started fiddling to all connections , but with no further result , meaning the lights just kept working ! I can only assume that some connection (around the fuses ) was not that well ....
So , very happy with the result , but not so sure about the longevity
But again thanks to all of you for your assistance : I learned quite a bit from it
Leo

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cactusman
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#7 Re: Electrical scheme

Post by cactusman » Wed Jan 02, 2019 9:11 am

Electrical issues are usually down to bad connections or faulty loads/switches etc or errors. The wires themselves rarely fail unless badly installed.....no grommets, too close to hot parts etc
Julian the E-type man
1962 FHC
1966 MGB....fab little car too

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