 | Home > Maintenance & Modifications > Replacement headlight harness - Highly recommended |
 
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| noworries4x4 Member Since: 24 Dec 2010 Location: Newton Abbot Devon Posts: 1195  
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I think I have just ordered a loom from Holland, my Dutch is crap but think I got it right. If everything is under control you are not going fast enough.
Every Day 16 MY Discovery 4 Commercial Workshop and Escort Vehicle Weekends 07MY L322 TDV8 Vogue SE Series 1 80" 3ltr 6cyl with overdrive No Worries 4X4 |
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18th Sep 2014 7:48pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17603  
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Lots of weird things can be bought in Holland - I hope you got it right!
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18th Sep 2014 9:23pm |
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| noworries4x4 Member Since: 24 Dec 2010 Location: Newton Abbot Devon Posts: 1195
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So do I
 If everything is under control you are not going fast enough.
Every Day 16 MY Discovery 4 Commercial Workshop and Escort Vehicle Weekends 07MY L322 TDV8 Vogue SE Series 1 80" 3ltr 6cyl with overdrive No Worries 4X4 |
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18th Sep 2014 9:59pm |
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| Tiger Member Since: 06 Jul 2012 Location: Wales Posts: 2265 
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Before you go mad with this mod, and I've done it
Measure the voltage at the bulb. Mine was 14.2v with the factory loom. LR aren't that bad, just adding a relay would help prevent the switch burning out. (Admittedly the new loom got the voltage up to a staggering 14.3v and now my headlights have been transformed from dim candle to the shining light of babylon, or I can't the difference) |
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18th Sep 2014 10:07pm |
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| Tiger Member Since: 06 Jul 2012 Location: Wales Posts: 2265
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18th Sep 2014 10:11pm |
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| Tiger Member Since: 06 Jul 2012 Location: Wales Posts: 2265
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Noticed a 'Glitch' or 'Feature' with my eBay special loom.
Dip works well Main works well Flash works well without lights on Flash doesn't work with Dipped on (is this an MOT fail?) Anybody else's do this? |
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19th Sep 2014 8:18pm |
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| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558
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if the feeds to switch relays is from the oringal headlight plug then it should all work
also in your link to where your measuring the voltage between old set up and new set up the voltages will be the same as not measuring with the bulb lit up , the load the bulb takes is what gives you the voltage drop , with the bulb still connected and lit you would have seen a voltage drop of 1.5-2 volts on the old set up |
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19th Sep 2014 8:27pm |
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| TD5_dan Member Since: 24 Feb 2012 Location: Essex Posts: 449
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Yes if this was the cheap loom from Ebay then i had the same problem they had wired the relays wrong, Im in Spain at the moment so cant remember exactly which is wrong but im sure it was just two of the pins around the wrong way. That loom was ok as a starting point but by no means a plug and play. I brought two of the harnesses and then modified them into one really good loom and put a seperate live feed to each relay with two fuses so i have effectively isolated the circuits for both main beam and dipped beam. When you have the loom in front of you and follow the wires while looking at a pin out of the relay its really obvious which wires are wrong.  2001 TD5 110 County Station Wagon - sold
1970 Series 2A Station Wagon 1970 Series 2A hard top 1960 Series 2 1972 Series 3 |
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20th Sep 2014 8:09am |
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| TD5_dan Member Since: 24 Feb 2012 Location: Essex Posts: 449
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I made reference to it in my thread here: http://www.defender2.net/forum/topic31044.html
Oh and not sure if its an MOT fail or not but its wrong and shouldnt be like that 2001 TD5 110 County Station Wagon - sold 1970 Series 2A Station Wagon 1970 Series 2A hard top 1960 Series 2 1972 Series 3 |
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20th Sep 2014 8:12am |
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| Tiger Member Since: 06 Jul 2012 Location: Wales Posts: 2265
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So you changed yours to 2 x 5 pin relays, hmmmmm.
I'll look up some wiring diagrams to see what's wrong |
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20th Sep 2014 8:35am |
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| Tiger Member Since: 06 Jul 2012 Location: Wales Posts: 2265
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Right so I've been and had a look and it's not that the pins are wrong but the basic loom is incorrect in principle.
It uses a 5 pin relay to switch power between 87 & 87a when switching Dip to Main. This works fine as it isolates each circuit on the switch, the problem is that 'Flash' activates both circuits at the same time, the ebay loom prevents this. So basically the loom needs to be modified to 2 standard relays and the 'Main' relay needs it's own fused power source or a jumper from the Dip relay. (As per Dan ) |
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20th Sep 2014 9:21am |
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| Tiger Member Since: 06 Jul 2012 Location: Wales Posts: 2265
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Oh and Munch was quite right measuring the Voltage without load was silly
LR Original Loom - Now 12.7V  Click image to enlarge Upgraded Loom - Now 13.4V - Noticeably brighter even though it's just 1V(ish) Click image to enlarge Daylight Photo / Compare & Contrast (pun intended) Left light is New Loom / Right light is Original Loom Click image to enlarge |
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20th Sep 2014 9:40am |
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| TD5_dan Member Since: 24 Feb 2012 Location: Essex Posts: 449
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Thats right Tiger you have reminded me and thats why i decided to put the two seperate power feeds in, there is still nothing stopping you from jumping the live across to the second relay holder but the two feeds are better. I kept the original 5 pin relays just ignored the middle pin and treated it like a 4 pin relay which works a treat
2001 TD5 110 County Station Wagon - sold
1970 Series 2A Station Wagon 1970 Series 2A hard top 1960 Series 2 1972 Series 3 |
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20th Sep 2014 12:33pm |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5884 
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When doing this mod, where do you take the extra positive feed from ? Direct from the battery or from the start feed? 1999 Defender TD5 110
Regards John M0VAZ Econet Station 48 no clock |
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20th Sep 2014 12:47pm |
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