marieholm Posted July 16, 2017 Share Posted July 16, 2017 Hi all, I'm finishing the rebuilt of my 1985 one ten stw and I'm running in to a electrical problem. All the lights work fine but for some strange reason the warning lights on the dashboard don't werk properly. If I turn on the headlights/rear lights the orange rear fog light indicator light on the dashboard goes on. The green light on the dashboard glows just a bit. Like really softly. I checked all the fuses and they are fine. Also quite strange, if I remove the bulbub of the rear fog light indicator on the dashboard the green light goes out completely. any advise? cheers, Dolf Quote Link to comment Share on other sites More sharing options...
vulcan bomber Posted July 16, 2017 Share Posted July 16, 2017 Sounds like an earth related issue. Chech you have them all attached and there making a good contact. Earths are the black wires. Quote Link to comment Share on other sites More sharing options...
marieholm Posted July 17, 2017 Author Share Posted July 17, 2017 hi, thanks for the advise. Does anybody have a drawing with all the earths on it? cheers, Dolf Quote Link to comment Share on other sites More sharing options...
western Posted July 17, 2017 Share Posted July 17, 2017 majority of earth [plain black] wires are on a single screw/bolt on the bulkhead in engine bay usually near the clutch master cylinder/fuel filter area. there should be a multi bullet connector with plain black wires behind the instrument pack on a pre 1990 vehicle as well. Quote Link to comment Share on other sites More sharing options...
ShortTimers Posted July 18, 2017 Share Posted July 18, 2017 (edited) 10 hours ago, western said: majority of earth [plain black] wires are on a single screw/bolt on the bulkhead in engine bay usually near the clutch master cylinder/fuel filter area. there should be a multi bullet connector with plain black wires behind the instrument pack on a pre 1990 vehicle as well. Will the earth point on the later models be in the same area in the engine bay? Edited July 18, 2017 by ShortTimers Quote Link to comment Share on other sites More sharing options...
western Posted July 18, 2017 Share Posted July 18, 2017 not sure about the newer Td5/Tdci engine vehicles, but all up to & including 300tdi use a screw attachment for earth point as mentioned above. Quote Link to comment Share on other sites More sharing options...
neil110 Posted July 18, 2017 Share Posted July 18, 2017 (edited) I fitted a TD5 bulkhead, to my 1984 One_Ten and it had the earthing point to which Western refers. Though a better idea is the one used by a friend. He managed to get hold of a piece of the earth bar from a commercial switch panel. Took all his body earth cables back to that and then a big cable from that bar to the chassis. Even if, strictly speaking, there is no earth on a vehicle. It is a neutral return Edited July 18, 2017 by neil110 1 Quote Link to comment Share on other sites More sharing options...
ShortTimers Posted July 19, 2017 Share Posted July 19, 2017 thanks western. I'll go looking in mine. 1 Quote Link to comment Share on other sites More sharing options...
western Posted July 29, 2017 Share Posted July 29, 2017 have you managed to cure the problem ? Quote Link to comment Share on other sites More sharing options...
marieholm Posted July 30, 2017 Author Share Posted July 30, 2017 HI, Currently working on the car. There is one black cable on the bulkhead (engine side) right above the clutch cilinder. it is clean and doesn't seem to have anything to do with the dash lights. Is it normal that if you take out one of the warning lights (for instance fog light) that the complete row stops working? Could the dash unit be faulty? any other tips are very welcome....! cheers, Dolf Quote Link to comment Share on other sites More sharing options...
western Posted July 30, 2017 Share Posted July 30, 2017 All plain black wires are Earth connections, so any stray ones should be connected to the chassis or body. removing one warning light bulb from the panel should not affect the rest of the lights. there maybe a break in the warning light panel printed circuit, you can remove this & have a look for any breaks/missing sections, new printed circuits are available. the fault might be a poor or missing earth connection inside the rear fog light or in the rear corners of the body behind the 2 cover panels, the earth wires should be bolted to the body at the rear lights. Quote Link to comment Share on other sites More sharing options...
marieholm Posted July 30, 2017 Author Share Posted July 30, 2017 hi Western, Again thanks for the advice. I checked all the earth connections but they seem fine. The printed circuit seems fine as well but it's hard to tell. I think i'll start by replacing this because it's not unlikely that it has broken after all these years. Any idea what the partnumber is for a 1985 110 2.5 na diesel? I can only find the later ones. 1993> Furthermore the reverse lights don't seem to work. any idea what could be the problem? There is no voltage on the wires at the switch on the gearbox nor on the bulkhead. cheers. Dolf Quote Link to comment Share on other sites More sharing options...
western Posted July 30, 2017 Share Posted July 30, 2017 reverse lights take their power from a plain green ignition controlled 12v feed, so will only be powered when ign is on/engine running, start with the fuse for reverse light, clean the fuse clips so they are shiney & put in a known good fuse, check the wiring at gearbox,make sure the terminals are clean & no wire breaks, might be a dead reverse light switch which lives on rear face just to rear of the gear levers, so fairly easy to get at to remove/examine, at the rear end again clean the bulb terminals, make sure the bulbs are correct [single filament,21 watt, 12 volt] you can swap these with the front or rear indicator bulbs to check they work, & examine the wiring in light units & inside the left/right rear corners & where it goes from the lights up into the body & where the loom comes out of the chassis, reverse light wiring from switch to lights is green with a brown tracer line. printed circuit is AEU2721 -- http://www.brit-car.co.uk/product.php/455309/0/printed_circuit Quote Link to comment Share on other sites More sharing options...
marieholm Posted August 19, 2017 Author Share Posted August 19, 2017 Hi guys, A quick update. Tried again today without any luck. All the earth connectors are clean and should work fine. I asked around but the printed circuit is not available anymore for the older versions. Reverse also not yet working but I'l take a go at that one next weekend. cheers, Quote Link to comment Share on other sites More sharing options...
western Posted August 19, 2017 Share Posted August 19, 2017 Also check the brake & tail light bulbs are correctly fitted, they have offset pins & can cause electrical problems if not fitted the correct way, they should be 21watt & 5 watt dual filament in one bulb, a single filament 21 watt indicator bulb fitted in the brake/tail light unit will cause faults as well. If you cannot obtain a printed circuit in Netherlands try Brit-car http://www.brit-car.co.uk/product.php/455309/0/printed_circuit or http://www.lrseries.com/shop/product/listing/2388/AEU2721-PRINTED-CIRCUIT.html?search=AEU2721&page=1 Quote Link to comment Share on other sites More sharing options...
pantherslover Posted June 25, 2018 Share Posted June 25, 2018 i have a similar problem. the fog light indicator lamp glows. as do all left hand side indicators and the l h brake light. the right hand works fine so it's not the flasher relay. im thinking a bad earth somewhere. did you get this fixed? Quote Link to comment Share on other sites More sharing options...
marieholm Posted March 24, 2019 Author Share Posted March 24, 2019 All, Sorry for the delayed respons but the new printed circuit did the trick. Everything works now! Many thanks for all the help! Just some other issues to sort out now but I'll start a new thread for those. Cheers, 1 Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted March 24, 2019 Share Posted March 24, 2019 Good to hear ! Mo Quote Link to comment Share on other sites More sharing options...
Land Posted December 4, 2023 Share Posted December 4, 2023 Hi just bought 1986 Defender and have no lights on right hand side of dash. Looking for circuit board please. Where can I get one. Thanks. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted December 5, 2023 Share Posted December 5, 2023 14 hours ago, Land said: Hi just bought 1986 Defender and have no lights on right hand side of dash. Looking for circuit board please. Where can I get one. Thanks. Do you mean the warning light panel? Quote Link to comment Share on other sites More sharing options...
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