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Thread: Spotlight wiring

  1. 1st August 2013, 10:56 AM #11
    wayneg's Avatar
    wayneg
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    If your vehicle needs to get an annual roadworthy check and you want to get it right, you might want to check on your States regs.


    A separate switch for on/off accessory lights when high beam is activated is required d

    My wiring diagram and comments conform to that regulation possibility
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  2. 1st August 2013, 01:13 PM #12
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    p38arover
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    Quote Originally Posted by SteveFarmer View Post
    I read somewhere that the suspension lock switch was the only non-momentary dash switch, this is obviously wrong !
    I can see I'll have to take a photo of the switch in on and off positions.
    Ron B.
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    2003 L322 Range Rover Vogue 4.4 V8 Auto
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    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



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  3. 1st August 2013, 01:18 PM #13
    TheTree
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    Quote Originally Posted by p38arover View Post
    I can see I'll have to take a photo of the switch in on and off positions.
    Ron

    I believe you because before I even started this thread I was pushing some of the buttons on the dash and noted a few of them locked on and thought "what i read does not seem correct"

    So as far as I am concerned you are correct, in fact there seem to be several which lock down

    Regards
    Steve
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  4. 1st August 2013, 02:21 PM #14
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    The locking switch is for the driving light kit which, I believe, is not connected via the BECM (I'd have to check RAVE). Devices controlled by the BECM probably only need momentary action switches as the BECM controls the device.
    Ron B.
    VK2OTC

    2003 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



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  5. 2nd August 2013, 08:03 AM #15
    TheTree
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    Hi

    I think I will stick to a solution which is known to work , and use the light switch!

    Thanks
    Steve
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  6. 1st October 2013, 10:58 AM #16
    KevinM Guest

    Spotlight Wiring

    I have purchased the front fog light switch together with the plug and wire still connected for my P38A to wire up the driving lights as stated in this previous forum. I was looking for the wiring diagram to hook up the switch to the relay to make it work as mentioned. Does the tell tail light work when it is wired up.
    Any help would be appreciated - thanks.
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  7. 1st October 2013, 08:10 PM #17
    TheTree
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    HI Kevin

    Essentially you need to put a suitable relay (20A minimum) and since it is a P38 i would use a diode protected relay, in a good spot under the bonnet then connect one terminal (86) to your power source and connect the lights to (87).

    Terminal (30) which trips the relay needs to go to your high beam wire and the earth terminal (85) needs to be run back through the firewall to one side of your switch, and the other side of the switch goes to an earth point.

    When you turn the switch on, it will complete the circuit and as long as high beam is on, the spots will fire up.

    Not sure if the light will illuminate, but fairly certain it will when high beam is on.

    Regards
    Steve
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  8. 1st October 2013, 08:56 PM #18
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    Yeh that's correct Steve, I was looking at exactly that on RAVE this morning.
    All the front lights on the p38 are positive switched with a common earth, so you can't use the negative as a highbeam pickup.
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  9. 1st October 2013, 09:17 PM #19
    Hoges
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    IIRC there are a couple of spare relay spots on the fuse box which might be useful... though it may mean a little "surgery" to ensure they're not otherwise connected.... just a thought
    MY99 RR P38 HSE 4.6 (Thor) gone (to Tasmania)
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  10. 1st October 2013, 10:02 PM #20
    KevinM Guest
    Hi Steve, Benji & Hoges
    Thanks for the replies. Can you tell me what the difference is between a normal delay and one that is diode protected. The lights I purchased(from China) came with a 40 amp relay that are to power up the two HID's spotlights. When you say connect up to the main beam is that the blue/green behind the second high beam light (mine is a 2001 P38A). On the fog light switch(front) that I purchased to use as the switch for the spotlights, there are six wires - 3 x black that are looped into one which I understand to be the earths, 1 x red/white, 1 x yellow/red, 1 x red/yellow. Are you saying that the earth terminal (85) should be connected to one of these coloured wires (which one?) and then the black run to a suitable earth. On the circuit diagram for the foglight switch, it looks like that the switch mech is connected to the red/yellow wire.
    Hoges you said "IIRC there are a couple of spare relay spots on the fuse box which might be useful" where do I find them and how do you know if they are used elsewhere and how would you connect them up? or is it easier just to use the relay I have or buy a diode protected one.
    Hope you can enlighten me further.
    Regards Kev
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