PieEater3142 Posted May 9, 2012 Share Posted May 9, 2012 Is there any way to get the hazzard warning lamp on the dash to light up from the Carling Hazard warning switch? Theres nothing on the wiring diagram about it but didn't know if there was a work around. Cheers, James Quote Link to comment Share on other sites More sharing options...
PieEater3142 Posted May 9, 2012 Author Share Posted May 9, 2012 wiring diagram for the hazard switch is here: http://www.devon4x4.com/index.php?option=com_phocadownload&view=category&download=39:carling-switch-pin-outs-for-hazard-rear-wash-wipe&id=6:wiring-diagrams&Itemid=36 Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted May 9, 2012 Share Posted May 9, 2012 What age of dash? On a Td5 dashboard the hazard warning indicator (ie. the red triangle icon on the warning light panel) is fed with a live feed to pin 9 of the 20-way connector on the back of the warning light panel. Simply connect this to the 'hazards on' output of your hazards switch and it should flash accordingly. On a Tdi dashboard I wasn't aware of a hazard warning indicator other than the one in the switch itself. Quote Link to comment Share on other sites More sharing options...
western Posted May 9, 2012 Share Posted May 9, 2012 pre td5 dash warning light panel didn't have a hazard red triangle symbol until the late 300tdi & some spec editiion V8's like the 50th annivesary 90 station wagon. Note the minor changes to indicator arrows & glowplug symbols 1st is my original '89 110's panel 2nd is a 200Tdi panel & posibly some 300Tdi 3rd is a 50th annivesary 90 panel, note the indicator arrows are split, hazard triabgle, I was intending to fit this to my 110, but opted for the Td5 panel instead. Quote Link to comment Share on other sites More sharing options...
PieEater3142 Posted May 9, 2012 Author Share Posted May 9, 2012 Sorry western, slightly confused here, I have a td5 dash (so have the hazard warning lamp) but there is no output that I can see on the Carling Hazard switch I purchased from Mud to indicate the hazards are on. Have I missed the connector somehow? Quote Link to comment Share on other sites More sharing options...
western Posted May 9, 2012 Share Posted May 9, 2012 should be easy enough to connect into the 'on' led in the switch, Quote Link to comment Share on other sites More sharing options...
UdderlyOffroad Posted May 9, 2012 Share Posted May 9, 2012 PieEater, I've been scratching my nodel on this one too, at least theoretically, on my circuit diagram. Short answer on this one is, no, there is no hazard dash light output on a Carling switch (it's built into the switch illumination itself). The easiest way I can think to make the Hazard LED illuminate is by using a relay as an AND gate. Use the two indicator headers as inputs & the hazard symbol as an output. When I get near my computer again I'll post up a diagram to show you what I mean Matt Quote Link to comment Share on other sites More sharing options...
western Posted May 9, 2012 Share Posted May 9, 2012 found this circuit connection diagram for the subject switch http://www.d-90.com/forum/showthread.php?t=33600 Quote Link to comment Share on other sites More sharing options...
PieEater3142 Posted May 9, 2012 Author Share Posted May 9, 2012 That was my thought, put an and gate in on the l and r indicators and feed that to the hazard lamp Quote Link to comment Share on other sites More sharing options...
cackshifter Posted May 10, 2012 Share Posted May 10, 2012 Just a small diode in each feed from the indicators should do it - it can't get across to the other side then. Very cheap and no moving parts. Nigel Quote Link to comment Share on other sites More sharing options...
PieEater3142 Posted May 10, 2012 Author Share Posted May 10, 2012 But then the hazard light will come on when you indicate surely? Don't you still need an AND gate? Quote Link to comment Share on other sites More sharing options...
cackshifter Posted May 10, 2012 Share Posted May 10, 2012 Yeah true.. I'll get my coat...Nigel Quote Link to comment Share on other sites More sharing options...
simonr Posted May 10, 2012 Share Posted May 10, 2012 You can more easily make an AND gate from a pair of relays. Just connect the contacts in series so power has to flow through both sets of contacts to illuminate the dash indicator. With Inddicators, only one of the two relays will energise. With Hazards, both will and illuminate the lamp. Si Quote Link to comment Share on other sites More sharing options...
PieEater3142 Posted May 10, 2012 Author Share Posted May 10, 2012 Si, do you mean take the earth feed for one as the output of another? Alternatively could you not just use a single relay, taking: 30 - lh indicator 86 - rh indicator 85 - standard earth 87 - hazard switch Would this not ensure that it was only switched on when power was flowing through the relay via 86 and is tripped by 30? Or would the on off timing cause problems? Quote Link to comment Share on other sites More sharing options...
UdderlyOffroad Posted May 16, 2012 Share Posted May 16, 2012 PieEater, I don't know if you ever managed to solve this doozie. A bit late but here’s my take on how the indicator circuit should work with a TD5 instrument pack and Carling hazard switch. Note this circuit has a few more bells and whistles, in that it has LED compatible relay AND a separate trailer flasher relay – this is so I can have any combination of LED lights /filament lights and LED light/filament lights on the trailer, and still all will flash correctly, and the trailer tell-tale will still work. And no need for ‘smart load’ devices (since when was a resistor smart???) And there’s no annoying trailer buzzer that some other trailer relays insist upon. Also, there’s inputs for the flash function on the Hawk Alarm (separately fused). Note, I have pretty much re-wired the whole indicator cicuit. There’s a ‘header’ connector behind the dash for left and right circuits. I’m redoing the chassis loom as well as the wing looms (light wiring upgrade a la mmgemini) hence it’s just quicker to redo everything, particularly as the physical location of hazard switch moves. But, I have kept the existing fuse locations. Part Number Balloons work as follows: WW(XXXX/YY)ZZ Where: WW Quantity needed in this case (e.g. pins on a connector) XXXX Manufacturer’s part number – usually Durite, but can be RS numbers or Carling – either way, putting the number into Google will reveal what it is YY Quantity supplied per bag/box of XXXX part number (e.g. number of pins in the bag) ZZ Size range or delimiter (e.g. in the case of connector pins <1 would mean pins used for cables upto 1mm2, <2.5 up to 2.5mm2) Cable ident balloons work as follows: (XX-YY-ZZZ) Where: XX Cable colour according to LR std (it is a BS std but probably long obsolete) YY Cable cross-sectional area in mm2 ZZZ Cable ID number Where there’s an ‘E’ instead of a Cable ID number, that means that’s the existing loom. A ‘?’ denotes something that I’m unsure of, e.g. the cross-sectional area of an existing cable. I’ve been lazy, some of the shorter wires don’t have IDs. Note: this entire circuit is untested, and will be for quite a while! It's just what I've knocked up over a few lunch-breaks to enable me to wire everything up quicker when I do get to that stage in proceedings! Ultimate Indicator Circuit.pdf Ultimate Indicator Circuit - Wiring BOM extract.pdf Quote Link to comment Share on other sites More sharing options...
simonr Posted May 16, 2012 Share Posted May 16, 2012 Si, do you mean take the earth feed for one as the output of another? Alternatively could you not just use a single relay, taking: 30 - lh indicator 86 - rh indicator 85 - standard earth 87 - hazard switch Would this not ensure that it was only switched on when power was flowing through the relay via 86 and is tripped by 30? Or would the on off timing cause problems? That's a much better way of doing it! 87 connects to the dash indicator, the other terminal of which goes to earth. Give yourself a gold star! Si Quote Link to comment Share on other sites More sharing options...
UdderlyOffroad Posted May 16, 2012 Share Posted May 16, 2012 Arse! Serves me right for attempting to review that circuit in a hurry! The observant amongst you will have spotted the mistake, in that the indicator stalk wasn't wired to anything! Have updated and corrected below Ultimate Indicator Circuit2.pdf Ultimate Indicator Circuit - Wiring BOM extract2.pdf And yes I know the writing appears tiny - you should be able to zoom on the pdf until it all becomes legible. .dwg files don't seem to upload for some reason. The idea when wiring up the truck will be to only print out the area needed, such as the raptor console and fuse box, and the wiring can hopefully done in bite-size chunks... Quote Link to comment Share on other sites More sharing options...
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