Reynolds_90 Posted December 21, 2008 Share Posted December 21, 2008 Hi all A few days ago the dipped beam headlights on our 300Tdi 90 failed. Having done some searhing on this and other forums, I cheked all the fuses, checked the wiring to the lights themselves and upon fiddling with the colum stalk thought this was the problem. Tried the check of hotwiring the three wires together and low and behold, the same simptoms - dash lights and sidelights on but still no dipped beam. They were working fine untill now but suddenly went. Any chnce it could be the (is this right) 'dim/dip' relay which was mentioned on here a while ago, and if so is it a dash out job to find? Cheers for any help Quote Link to comment Share on other sites More sharing options...
LittleBlue88 Posted December 21, 2008 Share Posted December 21, 2008 The dip relay sounds like the cause. To get to it,remove the four screws that hold the clock assembly and gently pull it away(the speedo cable will need to be un-clipped from the speedo),and you should see a pink/red relay attatched to the bulkhead-that is what you want. Quote Link to comment Share on other sites More sharing options...
Reynolds_90 Posted December 21, 2008 Author Share Posted December 21, 2008 Right, i'll hve a look tomorow when there is some light. I have also read that on earlier models you can just remove that rela ith no ill effects, is that still the same on the 300Tdi? Quote Link to comment Share on other sites More sharing options...
western Posted December 21, 2008 Share Posted December 21, 2008 there's also a resistor attached to the rear vertical of the right side inner wing, it's in the corner outboard of the brake servo, you should be able to see it with a torch, that may have burnt out & killed the dip beam. Quote Link to comment Share on other sites More sharing options...
TimR Posted December 22, 2008 Share Posted December 22, 2008 Any chnce it could be the (is this right) 'dim/dip' relay which was mentioned on here a while ago, and if so is it a dash out job to find? Cheers for any help Yeah had exactly the same problem with my 300tdi a couple of weeks ago and it was indeed the dim/dip relay. it is the pink relay tucked behind the dash (lower right side just out of view). Dead easy to replace, pull old one out, push new one in. It was about £21.00 from LR. Quote Link to comment Share on other sites More sharing options...
Simon Smith Posted December 22, 2008 Share Posted December 22, 2008 If you remove the relay you will have to connect a couple of the terminals together so your lights work. I did this on mine, but can't remember which terminals you need to connect together. To avoid trying to rewire things in the dash, I actually dismembered the relay and made up the link inside the now empty relay housing. Quote Link to comment Share on other sites More sharing options...
Reynolds_90 Posted December 24, 2008 Author Share Posted December 24, 2008 Cheers guys, found the problem. It ws the dim/dip relay which burned out - may have something to do with having 'LUCAS' stamped on it Replaced it and I now have dipped beam again Thanks for the response and Merry Christmas David Quote Link to comment Share on other sites More sharing options...
mikesyd Posted December 22, 2012 Share Posted December 22, 2012 Hi I have a 1996 Defender 110 300TDI. It is British Built/Spec in Perth, Western Australia. My Headlamp dipped beam all of a sudden died. As a mechanic of 26 years I have checked the usual suspects (relays etc.) I have tried a new light switch and have power in/out of switch but not to the two 7.5 amp fuses for the dipped beam. There is power out of the yellow relay when the headlamp switch is activated (one of the yellows under right side of fuse box). Wanting to use over christmas but fast running out of options. Any help appreciated. Thanks Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted December 23, 2012 Share Posted December 23, 2012 Have you checked the pink relay behind the dials? This is the dim-dip relay (transformer), known for failing. You can temporarily bypassing it by removing it and connecting two of the pins in the socket together. I think it's either the blue/white pair or blue/red pair, not sure 100%. Quote Link to comment Share on other sites More sharing options...
mikesyd Posted December 23, 2012 Share Posted December 23, 2012 Hi Further to my post above, I went out this morning took out instrument cluster and pulled the pink relay. It already has the two-pin pink bypass relay fitted. Popped the top on it and put test light to it - no power. I have again checked the indicator stalk and the headlamp switch (both new 400km ago) and have power in/out of switch. Headlamp relay has power in/out but have no power in the blue wire with red tracer anywhere. I really dont want to pull out my raptor dash to get to the wiring but may come. There is no power in any of the blue/red wires anywhere I can access but all switches and relays functioning. Everything else working fine, side lights, high beam, indicators etc. Dipped beam was working one minute and stopped the next. Any additional thoughts would be gratefully received. Quote Link to comment Share on other sites More sharing options...
mikesyd Posted December 23, 2012 Share Posted December 23, 2012 Found the problem broken red/blue wire after flasher stalk plug. Was getting power to just past plug, poked test light in about another 50mm down no power. I had only originally tested to just past plug. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted December 23, 2012 Share Posted December 23, 2012 Glad you got it sorted, these types of problem can be very frustrating ! Mo Quote Link to comment Share on other sites More sharing options...
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