Jump to content

Hazards Not Working But Indicators Do..?

Recommended Posts

I'm hoping one of you genuis's out there can help a novice... :sorry:


Indicators work OK but my hazards don't! I've checked the fuses (all OK) and I've replaced the switch and relay but still no joy?


If I disconnect the hazard switch the indicators don't work, if I flick the hazard switch on then the indicators also don't work! If the hazard switch is connected but not turned on then the indicators then work again...


I don't know very much about car electrics, well actually I know nothing, but I've done the basics and come up with a blank.


Please tell me I'm being stupid, or more helpfully, can anyone enlighten me? :acute:





Share this post

Link to post
Share on other sites


three spade flasher relay

sierra switches

did work but now dosent


indicators work so most of the system must be ok.


the only difference when you operate the hazard switch is that the feed to the flasher unit is switched from an ignition feed to a perminant feed, AND the indicator switch (left right) is taken out of circuit and both the left and right circuits are connected together, and to the output of the flasher unit.


This is done by two switches on a printed circuit inside the left switch gear.


first check feed to flasher, think its 49a. Check it first with ignition on hazard off, then ignition off hazard on. should have 12volt either way, if not check output to from 49a of switch, if no, check feed to hazard switch pin 30. if that checks out prob switch. strip and clean, or replace.


if feed present it will be the cross over switch, strip and clean, or replace.


hope this helps

Share this post

Link to post
Share on other sites

Thanks knights_templar


I didn't build the car so I don't know what bubbings have come from what, but the relay is 12v 30a 4 spade, the switch appears to be off a mini - that is what I've replaced as it looked identical, but the wiring appears to be a home-made loom rather than a standard ford thing...

Share this post

Link to post
Share on other sites

I had same problem but I suspect the cause was very specific to my car. A spider had made its home in my switch and died there jamming the contacts. Might be worth stripping the switch to check for mumified corpses (it is nearly Halloween)

Share this post

Link to post
Share on other sites

Thanks both...


You know earlier when I said I was a complete novice - well more like an idiot!


After both of your messages I went back out to the garage to go through everything again... I traced some of the wires back to another seperate small fuse box and guess what - it was a fuse! I stole the same ampage out of my daughters car to test and bingo - my hazards now work!


So the lesson is simple... check, check and double check...


I feel a tad stupid but you would think I'd be used to that by now! :crazy:

Share this post

Link to post
Share on other sites

It is NEVER stupid asking questions, the kit car thing is a massive learning curve for all of us.

Even as a time served mechanic I regularly asked questions during my build and what's more always got an answer, or the pi... s taken but that's what makes this place so brilliant.


Like it has been said many many times "the only stupid question is the one you don't ask"

  • Like 2

Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By Jtomo
      Hi, im a new member and just bought a robin hood. On driving the car back, i noticed the coolant temp up over 120 deg. Sated! Seemed high. I stopped several times on the way home to let it cool. The seller had told me it ran hot, 100 deg he said!....not 120 deg! Anyhow, managed to get home ok. I assume the wind through the nose cone kept the rad just cool enough not to blow!
      Went out yesterday with my son. Can kept stalling in low gears and i had to keep restarting. The engine got hlt again, up over 120 deg so i tried to trickle home, but alas did not make it before the engine started smoking and i lost power.
      So 1 day old, my new dream car is stuck in the garrage! Really upset.
      Im no mechanic, in fact im hopeless with engines, so i need some help, any help! Is anyone on here local enough to spare me a couple of hours to help understand whats wrong and hopefully help repair?
    • By Tazza67
      Ok so carried over from one of the other threads that I kind of hijacked.... thanks to Nigel for all the help so far!
      I've decided that I want to redo the electrics on the EXMO partly as the old sierra loom has definitely seen better days (soldered joints are failing apart) but largely to expand on my knowledge... there's a serious lack when it comes to electrical stuff - I can't see it working so struggle more than mechanical stuff. Point to note: my kit car is stored at the parents house in Cornwall while I am away working in the Midlands so alot of this is having to be done with some photos courtesy of Dad, research (Haynes manual) and a bit of hope/ dodgy memory!
      Current plan is to make as much of it as possible plug and play ready and to leave the engine electronics largely untouched,
      So the connectors I've chosen to use are super seal, I've ordered a range from 1-6pins so should cover everything I need.

      The fuse box from the sierra is pretty bulky and will hopefully largely be empty with the simplification so plan is to throw that and buy a smaller box, relay storage is yet to be finalised but thinking a nice mounting box from some Carbon Fibre would be interesting (aware it conducts so care will have to be taken).
      As Nigel confirmed I am planning on adding another relay for the headlamps so both dipped and main use a relay unlike the old loom. These will be courtesy of Car Builder Solutions. http://www.carbuildersolutions.com/uk/standard-relay-30-amp-4-pin-integral-mount
      Crimp connectors to be used are the standard spade type, alongside those shown below. These are thru crimps with an adhesive lined heat shrink to make them waterproof.

      The wires are still to be decided along with exactly what fuse ratings etc I will need.
      So first real job and steep learning curve is the wiring diagram, I'll be home for a week in August and plan is to get the wiring done... may well be a very ambitious plan!
      Please feel free to comment on the diagram / point me in the right direction! It's very much a work in progress with more stuff to be added as I go. Point to note is my sierra has the early stalks with the square hazard switch.

    • By ivorbigun
      just found this wont be needing it for mine (got mini/Landrover one

      £15 + postage or collect from ba5 3au area

      postage will be £7

    • By ivan the terrible
      Hi all, sorry again Mr dictator, could do with a bit of help on my electrics, modified my dashboard a bit, but I think I've got to my limits regarding the wiring. Somehow I've lost my indicators, hazards and brake lights,
      So I was wondering if there were any auto electricians around the south Yorkshire area, will need a good sense of humour to understand my handy work,would really appreciate the help,
      Cheers Ivan
  • Create New...