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Author: Subject: Why aren't my hazards going off? Now sorted!
james h

posted on 13/8/09 at 01:39 PM Reply With Quote
Why aren't my hazards going off? Now sorted!

My hazards don't flash properly. Instead of going completely on/off repeatedly, they go bright/dimmer/bright/dimmer.

My indicators work just fine.

I have LED lights if that makes any difference, with an LED relay.

Hopefully I can get this sorted for SVA on wednesday!

James

ETA: I am using standard sierra switchgear

[Edited on 13/8/09 by james h]

[Edited on 13/8/09 by james h]

[Edited on 13/8/09 by james h]

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Mr Whippy

posted on 13/8/09 at 01:44 PM Reply With Quote
got a picture or diagram of the wiring setup?






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speedyxjs

posted on 13/8/09 at 01:44 PM Reply With Quote
First place to look i think would be a short circuit or bad earth?





How long can i resist the temptation to drop a V8 in?

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james h

posted on 13/8/09 at 01:46 PM Reply With Quote
quote:
Originally posted by Mr Whippy
got a picture or diagram of the wiring setup?


Sorry, none of the above - its an MNR loom though if that helps.

I will go through the earths again.

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james h

posted on 13/8/09 at 02:42 PM Reply With Quote
I am trying to think about this logically - the indicators work fine, both sides.

As far as I know, the hazard switch ontop of the steering column just closes both the left and right indicator switch and completes both circuits?

The only difference is that there is a light inside the hazard switch. At the moment it is very dim. Could this be messing something up?

The earth on the flasher relay is fine, there don't seem to be any earths on the indicator side switchgear.

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twybrow

posted on 13/8/09 at 03:24 PM Reply With Quote
The hazard switch should be powered by a completely different circuit to the indicators, as it bypasses the ignition switch (it should work without the ignition on). It sounds like you have a fault in that side of your circuit.....
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Peteff

posted on 13/8/09 at 03:26 PM Reply With Quote
The indicators take power from an ignition switched source and the hazards should run straight from the battery so they can be used without the key in. Do they work when the key is removed completely ?





yours, Pete

I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.

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james h

posted on 13/8/09 at 03:32 PM Reply With Quote
The hazards work when the ignition is off.

I am looking at the hazard switch and am going to clean up the insides of that side of the switchgear. Currently there is loads of gunk in there.

With the indicator flasher relay pulled out the lights are on, but do not flash.

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james h

posted on 13/8/09 at 05:58 PM Reply With Quote
Problem solved! :D

I took apart the switchgear, turns out the hazard bulb, although working, was the problem. The hazards work just fine without the bulb.

Now I need to find a red LED to fit in its place...

Yay!

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BenB

posted on 13/8/09 at 09:41 PM Reply With Quote
Do you????? If you've got indicator bulbs / LEDs on the dash you don't need the hazard switch to flash on / off, you just need one tell-tale...
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james h

posted on 14/8/09 at 02:28 AM Reply With Quote
quote:
Originally posted by BenB
Do you????? If you've got indicator bulbs / LEDs on the dash you don't need the hazard switch to flash on / off, you just need one tell-tale...


Ruddy good shout - I thought since every tintop hazard switch flashes that I have seen, that mine must too! Saved me a beer token

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