cookie64 Posted June 13, 2011 Share Posted June 13, 2011 Ahh help please I was out in Wales the other night turned the truck off then when I started her again I had no headlights anymore The sidelights work and I can flash full beam but nothing happens with dipped beam on or locking onto full beam I've checked the fuses and bulbs both appear fine I was just wondering if there is any other common failure points It's a 90 300tdi standard lights and switches Quote Link to comment Share on other sites More sharing options...
cosecon Posted June 13, 2011 Share Posted June 13, 2011 I actually had exactly the same problem on Friday in my Def 90 V8. Finally removal of fuses, spraying with contact cleaner and refitting solved the problem.To be honest I was not expecting that contact cleaner would help since the contacts looked ok, but it worked... Quote Link to comment Share on other sites More sharing options...
Anderzander Posted June 13, 2011 Share Posted June 13, 2011 The dip switch often melts inside - check that out. Quote Link to comment Share on other sites More sharing options...
Gromit Posted June 13, 2011 Share Posted June 13, 2011 Had this a while back, and it was the head light relay. It's the left most, or 2nd last in the fuse box. Mine just needed to be cleaned up and reseated. As above, check the main lighting switch hasn't melted and the dim-dip relay, if you have one. If you do, it's best just to bypass it. My fault was very intermittant. I drove around for about 2 months, with no column shroud or fusebox cover and multimeter and wiring diagram Quote Link to comment Share on other sites More sharing options...
MONKEYCOPPER Posted June 13, 2011 Share Posted June 13, 2011 Similar to me, at fault was lighting master switch, had side lights but contacts for headlights had burnt out. Paul Quote Link to comment Share on other sites More sharing options...
Smego Posted June 13, 2011 Share Posted June 13, 2011 I had simular but it was just on one side, was the wire from the relay to the headlight just gotton old. Quote Link to comment Share on other sites More sharing options...
cookie64 Posted June 13, 2011 Author Share Posted June 13, 2011 Thanks for all the quick replys But still no light and still confused Basically I've tested the switch with multimeter and that works all fuses are fine the yellow relay in fuse box clicks so I assume that works and the pink relay behind binnacle clicks but I don't know what this ones for! Also sidelights work but light up the main light bowls a little :s then on dipped setting only sidelights work Where would I find the end of the cable to the lights so I can test if it's that? Thanks tom Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted June 13, 2011 Share Posted June 13, 2011 Sounds like the dipped beam relay to me. The pink one behind the dash. It supplies power to the main headlamps at a lower level when the sidelights are on. It can be bypassed I believe by joining two wires together, but I'm not sure which ones exactly. I'm sure I've seen a post on the forum about it though! Quote Link to comment Share on other sites More sharing options...
nickwilliams Posted June 13, 2011 Share Posted June 13, 2011 the yellow relay in fuse box clicks so I assume that works and the pink relay behind binnacle clicks but I don't know what this ones for! Don't assume the relay is ok just because it clicks. That only proves that the coil is OK but tells you nothing about the state of the contacts. Nick. Quote Link to comment Share on other sites More sharing options...
Bullyjohn Posted June 13, 2011 Share Posted June 13, 2011 Just a quick suggestion - I think its worth checking all your fuses and giving the fuse connections a quick rub - I have found they are prone to corrosion and poor contacts which can give rise to all manner of electrical failures. I now use petroleum gel on the fuse end and contacts to prevent the corrosion and get good electrical contact.. Seems to be working so far.... You relay could be okay - but you power supply fuse may be blown or have poor contact.... cheaper than a new relay if its root cause.... Quote Link to comment Share on other sites More sharing options...
Gromit Posted June 14, 2011 Share Posted June 14, 2011 Sounds like the dipped beam relay to me. The pink one behind the dash. It supplies power to the main headlamps at a lower level when the sidelights are on. It can be bypassed I believe by joining two wires together, but I'm not sure which ones exactly. I'm sure I've seen a post on the forum about it though! yep, pink relay is the dimdip. Bypassed by removing it and joining pins 2 and 8. Both wires should be the same colour - blue / red trace. Quote Link to comment Share on other sites More sharing options...
cookie64 Posted June 19, 2011 Author Share Posted June 19, 2011 Thanks for all the advice guys It seems the cause was that the steering column switch was knakred so got a new one But still have a very dim light in main bowls when sidelights are on I'm not sure if it did this previously to the problems so is this normal? Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted June 19, 2011 Share Posted June 19, 2011 Yes, that's the dim-dip functionality. Perfectly normal for a lot of Defenders Quote Link to comment Share on other sites More sharing options...
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