Classic cars forum & vehicle restoration.
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oldtimer Guest
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Posted: Tue Apr 20, 2010 3:38 pm Post subject: reversing light relay |
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For those who were wondering when my next obscure,probably strange, query would appear this could be it.
I have just received a relay which Iexpected/assumed would have terminals marked with the format of old, i.e. 85 87 30/51.
This little chap has the three terminals marked B, E, L.apparently.
I say "apparently" since the cover has been crimped on and partially obscures these letters so that E, for example could be F, and L maybe I.
Is this another devilish plot by the E.U. or the norm for such markings,having been updated while I was in one of my Rip van Winkle modes.
Clarification either way would be much appreciated.Thank you.
oldtimer |
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Phil - Nottingham
Joined: 01 Jan 2008 Posts: 1252 Location: Nottingham
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Posted: Tue Apr 20, 2010 7:39 pm Post subject: |
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B= Battery/Feed, E = Earth/Feed? L = lamp?
Use a test light/meter
The numbers are continental (W German!) French use these
Old UK W1-W2 (activation windings) and C1 C2 C3 - contacts.
W2 is soimetimes missing as casing earthed for horns etc
See PM - I think you have a Jap flasher can
See this site for decent modern relays
http://www.vehicle-wiring-products.eu/VWP-onlinestore/relays/relays.php _________________ Rover P2
Rover P4
Rover P5 & P5B
Land Rover S2 & S3
Morris Mini Traveller Mk2 |
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Jim.Walker
Joined: 27 Dec 2008 Posts: 1229 Location: Chesterfield
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Posted: Sat Apr 24, 2010 9:16 pm Post subject: |
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I think you may have got hold of a voltage stabiliser for Smiths electro-static dashboard instruments (those which move slowly). I cannot see how you could possibly have a relay with less than 4 terminals.
Could the letters possibly be B(battery) E(earth) and I(instruments)? _________________ Quote from my late Dad:- You only need a woman and a car and you have all the problems you
are ever likely to want". Computers had not been invented then! |
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Phil - Nottingham
Joined: 01 Jan 2008 Posts: 1252 Location: Nottingham
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Posted: Sat Apr 24, 2010 9:32 pm Post subject: |
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Horn relays do have 3 terminals but are NLA _________________ Rover P2
Rover P4
Rover P5 & P5B
Land Rover S2 & S3
Morris Mini Traveller Mk2 |
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peter scott
Joined: 18 Dec 2007 Posts: 7119 Location: Edinburgh
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Posted: Sat May 15, 2010 11:14 pm Post subject: |
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Hi John,
Reversing lights are usually one or two 22 watt bulbs. Reversing lamp switches are normally very beefy devices and are more than capable of switching the current to a couple of 22 watt bulbs. Why do you want to include a relay?
Peter _________________ http://www.nostalgiatech.co.uk
1939 SS Jaguar 2 1/2 litre saloon |
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oldtimer Guest
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Posted: Sun May 16, 2010 10:27 am Post subject: reversing light relay |
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Hello Peter,
I hesitate to open this saga over again but you now have only yourself to blame!
This is an original feature on my 1968 Volvo 120 estate,not some after thought by me.The system seems,on the one hand, over engineered and, on the other, somewhat Heath Robinson.The relay is small canister with 3 terminals;1 feed from fusebox;2 wire to switch on gearbox which is a crude item,located in an aluminium housing,which earths against the relevant rail when reverse is engaged,completes the circuit and,should then allow current to flow to the 3rd pin on the relay which carries the wiring to the reversing lights and completes the job.Except the switch on the box fell apart,its replacement also,and with my abysmal ignorance of things electrical,I am not sure the relay is any good either.This is how things stand at present.Good to hear from you.Regards John. |
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Nic Jarman
Joined: 05 Oct 2008 Posts: 1031 Location: Stoke by Clare, Suffolk
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Posted: Sun May 16, 2010 7:23 pm Post subject: |
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Jim, one of the coil terms and the common for the contact are common. _________________ 1936 Morris 8 Series 1
1973 MGB roadster
1977 MG Midget 1500
Dax Rush |
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oldtimer Guest
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Posted: Sun May 16, 2010 8:17 pm Post subject: reversing relay |
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Hello Nick
Good of you to pitch in when you clearly have problems of your own at present but that is what is great about this forum and the people you meet on here.You wouldn't believe what a cheap and nasty bit of kit the switch on the gear box is! It is nothing more than a spade connector attached to a tiny spring,about one MM in diam and approx 3 MM in length.Half way along the length of this item is a moulding of rubber,virtually a grommet,which serves to locate this thing,projecting down through an aluminium housing on the rear of the gearbox which makes contact with the relevant rail which moves back into this little housing when reverse is engaged,thus completing the circuit and triggering thecontact in the relay and encouraging the reverse lights to operate!That is what would happen in an ideal world,I am told.
Regards.Hope things work out for you. John |
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Nic Jarman
Joined: 05 Oct 2008 Posts: 1031 Location: Stoke by Clare, Suffolk
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Posted: Mon May 17, 2010 11:39 am Post subject: |
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Hi John, problems are little challenges that life throws at you and we feel good when we overcome them. I think it is great fun working out why these old cars are built the way they are. We just accept the level of engineering that we have now but to back track to when there was no hydraulics or coil suspension and hardly any welding, thats not work, it's fun. But we can have too much fun.
PS thanks for the support. _________________ 1936 Morris 8 Series 1
1973 MGB roadster
1977 MG Midget 1500
Dax Rush |
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