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Thread: Defender TD5 Main Light Switch melted

  1. #1
    3landerblue Guest

    Defender TD5 Main Light Switch melted

    The main light switch seized last night, I couldn't switch the lights off without a little force. On removing the switch this morning I found that the copper switch contactor had got hot and melted itself into the white plastic pin where the three wires connect.

    As I live 600km North of Adelaide I can't just nip down the road and buy a new switch. But have been quoted $364 for a genuine or $150 for a generic switch!

    The dealer told me on the phone that this happened to other owners when going on bumpy terrain!!

    In the meantime so that I can drive at night I am thinking if it is possible to cut the three wires from the switch and join them together and then plug back in the connector, thus giving me lights.

    The switch has 3 wires I am thinking of joining all three together to get side and main lights? Until a new switch arrives

    Looking at the circuit diagram

    Brown wire comes from 30amp fusebox under seat
    Red wire goes to Fuse 19 and 18
    Blue wire goes to relay headlamp


    Your thoughts please?

    cheers

  2. #2
    tombraider Guest
    600kms puts you where?

    And yes, i think u may get away with your idea.

    Have you changed the bulbs in the headlights ever?

  3. #3
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    mmm well souunds a bit of a bodge but why don't you plug the wires into the fog light switch and use that for head lights at the moment . After all don't use the fog lights that much.
    I mean disconect the fog lights totally and wire the wires into the switch
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  4. #4
    3landerblue Guest
    Thanks for the reply,
    No never had a faulty bulb apart from rear gargo area

    cheers

  5. #5
    JDNSW's Avatar
    JDNSW is offline RoverLord Silver Subscriber
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    Unless they have changed, the Defender does not use a relay in the headlights. For this reason you should never use more than the original wattage bulbs unless you fit relays (which is a good idea anyway).

    Four Wheel Drives (Melbourne) list your switch at $220 - but the earlier switch is only $88, and I think (but not sure) the only difference is the leads and plug, suggesting that fitting the older switch with the leads spliced could be the best bet. I am sure if you phoned them they can confirm whether this is the case.

    John
    John

    JDNSW
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  6. #6
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    Correct John, the early and late switches are the same, just solder on the old plug etc and away you go. The Traxide headlight relay kits/lamp upgrade kits will fix this problem, as a counties, early RR's and defenders all have no headlamp relays.

    --and it has nothing to do with bumpy roads!!!!

    They will however get DUSTY, and this will create heat in the contacts due to dirt on them and melt them into the plastic housing, creating a break in the circuit.

    Relays and good earths are your best friends in landrover electrics.

    JC

  7. #7
    dmdigital's Avatar
    dmdigital is offline OldBushie Vendor

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    Paddocks in UK sell them for GBP32.50 (about AU$85) + postage

    http://www.paddockspares.com/pp/DEFE..._VA104806.html
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  8. #8
    3landerblue Guest
    I see what you are saying regarding no headlamp relays, thats a lot of current on a switch.

    I have a copy of a Land Rover Rave CD and was looking at the circuit diagrams there is a difference between a 2002 English Defender and a 2002 Export Defender

    2002 English Export Left Hand Drive
    Exterior light circuit the switch goes through a headlamp relay

    2002 English Right Hand Drive - No Headlamp relay

    So we drive on the left but our vehicles are RHD re position of steering wheel)

    cheers

  9. #9
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    I had this problem on a Series III many years ago after having the clever idea to upgrade the lights to QH. Lights were fantastic for about 3 hours, standard LR, no relay, fried the switch.

    Stupid of me not to think of putting in a relay, even more stupid of LR that they still don't use a relay.

    Best regards
    DarrenR

  10. #10
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    once you are over the hump get a new switch in and also send a pm to drivesafe about his headlight cabling upgrade kits. they work really well, take the load of the switch, use heavier cable, are a very easy plug in a few cables fit a relay and away you go setup giving much more light out of your standard bulbs... and no more fried switches....
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