 | Home > Technical > 2002 Headlight Issues - main beam always on with ignition |
 
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410  
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OK well it is the standard factory wiring at that end then. Check that off the list. The small connector is difficult to makes out. Could be a position light for a set of Halogen lights. Does the wiring for that lead back into the loom or to something like the sidelight wiring? |
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9th Aug 2023 2:23pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6604 
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Can't see the wire colours because of the glare, that connector should be the horn (purple/black and black wires). Not all Defenders have 2 horns fitted
Always handy to give wire colours   1988 90 Td5 NAS soft top
2015 D90 XS SW |
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9th Aug 2023 2:28pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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My thoughts exactly Martin. Always, always get a wary feeling when I see chocolate block connectors used... Horrid horrid things... I am wondering if the previous owner had a duff light switch and to get around buying a replacement came up with some "creative" wiring so that the main beam headlights just come on and stay on. Better that way then no lights at all. I wouldn't be surprised if you trace and remove that wiring you can get the headlights back to factory switching. |
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9th Aug 2023 2:30pm |
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| docperio44 Member Since: 08 Aug 2023 Location: Quebec Posts: 21  
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Hmm, pulling that fuse makes lights not work at all. In any position of switch.
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9th Aug 2023 2:59pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6604
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Stupid question, but is the light switch connected back up to this plug?
Click image to enlarge 1988 90 Td5 NAS soft top
2015 D90 XS SW |
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9th Aug 2023 3:00pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6604
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Another check - headlights on in pos 2 require ignition on. 1988 90 Td5 NAS soft top
2015 D90 XS SW |
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9th Aug 2023 3:23pm |
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| docperio44 Member Since: 08 Aug 2023 Location: Quebec Posts: 21
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I remebered that one! Ignition on and ingition on with start -- lights are not coming on in position 2.
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9th Aug 2023 3:28pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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Now that you have removed the "interesting" wiring and are back to the factory standard. Are there fuses in place for the headlights? There are two for dipped and two for high beam.
Fuses 22 - 25 are the ones to check. https://www.lrworkshop.com/electrics/defen...nd-headers |
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9th Aug 2023 3:37pm |
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| docperio44 Member Since: 08 Aug 2023 Location: Quebec Posts: 21
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Those are in and good -- I wonder if that Tapping was done for another reason -- to bypass/redo the current headlight system. But if connected to a switch then relay -- I don't get why that rigged up system would not work with the switch.
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9th Aug 2023 3:51pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6604
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Hmm. If it works how I have guessed, then all the wiring to the headlights through the original fuses will be OK.
A photo of any markings on the add-on relay would help me work out how this mod was supposed to work. Could you pull the relay out (leave it connected to the wires) and see if has any markings? Also which fuse did the inline fuse tap into? If you are getting sidelights from the switch the brown/blue 12V feed in is OK (and was the assumed supply for the relay mod). Maybe the blue output wire from the lighting switch connector is no longer joined to the blue wire on the factory loom - perhaps taped together but no longer electrically connected? With the relay mod in place the relay supplied the headlights through its blue wire, joined to the factory blue wire, so we know the blue wire from this joint to the rest of the car is "good". But we don't know if the original blue wire was cut, and it could be that the blue headlight output from the switch goes nowhere at the moment. Maybe peel back a little of the tape around the blue wires and see? 1988 90 Td5 NAS soft top
2015 D90 XS SW |
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9th Aug 2023 4:47pm |
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| docperio44 Member Since: 08 Aug 2023 Location: Quebec Posts: 21
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First, let me say thanks for the help here. Very much appreciated.
Ok, here are some pics. The fuse was inline with the number 8, car alarm fuse. there were 2 10 amps coming off that one single 10am fuse. Check the pics. Good question about the side lights. I don’t know where those come from. I see they have different fuses. But need to check that more Click image to enlarge Click image to enlarge |
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9th Aug 2023 5:33pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6604
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Fuse 8 is an ignition source, so that makes sense.
Click image to enlarge To check.. Fuse 8 is the very top right fuse in the fuse box, on the top row? Is that where the other side of this fuse went? Click image to enlarge The mod relay itself is a double-make relay but it with two joined 87 terminals, which now the relay is disabled but still plugged in would have caused the side light switch position to also feed the headlights 
Anyway, leave the relay unplugged now as plugged in it's bridging two circuits we want separate. Need to check is under the tape on the blue wires to see what's going on. Do you have any sort of volt meter to check inputs/output from connectors and at fuses? 1988 90 Td5 NAS soft top
2015 D90 XS SW |
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9th Aug 2023 5:58pm |
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| docperio44 Member Since: 08 Aug 2023 Location: Quebec Posts: 21
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I messed up along the way... sorry. I told you something incorrect.
So with the mode fuse disconnected -- none of the lights work -- not even the headlight tilt (I told you they did before, Or sidelights). When I re-connect mod and fuse and light switch but leave signal/horn stalk disconected, sidelights and tilt work. As soon as I plug in the stalk -- the main beam comes on. Does that help or hurt? |
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9th Aug 2023 6:00pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6604
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Headlight motor red/orange wire is a sidelight wire, so sidelights off = no 12V at headlight motor either.
OK, let's fill in some blanks! Mod fuse out, light switch connected, stalk connected... do any lights work with light switch? (Note the stalk must be fitted for the headlight supply from either the mod or the proper lighting switch to reach the headlamps. If the stalk is unplugged, headlights don't work at all. Doesn't affect sidelights). The yellow wire for the mod, where does that go? The black wire for the mod, where does it actually connect to? It looks like it's the brown/blue but equally I can interpret the photo another way. We will get this sorted! 1988 90 Td5 NAS soft top
2015 D90 XS SW |
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9th Aug 2023 6:11pm |
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