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Wiring LX hazzard lights

Started by Neils LX , Dec 20 2009 08:04 PM

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18 replies to this topic

#1 Neils LX

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Posted 20 December 2009 - 08:04 PM

Hi

My uncle is helping me wire up hazzard lights into my torana. I have a swich from a VB commodore with the wiper section removed.
Posted Image

I understand i need more than this to make it work and im guessing there is a wiring diagram here
http://www.gmh-torana.com.au/forums/index.php?showtopic=29851
but i cant seem to upload it as it reterns to forum menu.

Can anyone help me out.
Chears Neil

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#2 davelh

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Posted 20 December 2009 - 11:27 PM

This is one of those times it would be good to still have Devilsadvocate around the forums.
I thought I had the diagram he drew, but I only seem to have his ciscuit for a headlight warning buzzer.
I will kepp looking though, it has to be around somewhere!

Dave

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#3 rodomo

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Posted 20 December 2009 - 11:42 PM

The phantom lives :ph34r:

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#4 76lxhatch

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Posted 21 December 2009 - 06:43 AM

The circuit discussed in the link above has some extra requirements over the factory implementation. Looking at a VK one I have here it seems like you have everything required, you just need to add an always-on 12V feed because the hazards need to operate without the ignition on. What I have in front of me:

Black: horn
Brown: always-on 12V supply for hazard switch
Purple: ignition switched 12V supply for indicator switch(es)
Dark blue: RH indicator out
Light blue: LH indicator out

So hopefully you should be able to just connect everything as before and you will have one extra wire which needs the always-on 12V for the hazard light switch. Grab a multimeter (ohmmeter) and run the switch through the different positions to figure out what is what.

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#5 Neils LX

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Posted 21 December 2009 - 08:16 PM

Hi
Shall try to add some 12v power and see what happens.
I dont nead the reverse lights hazzard function as ill leave it in 1st gear if it brakes down again.
If you can find the diagram i would like to have a look at it just in case i get it wired to suit reverse lights.

Many thanks Neil

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#6 76lxhatch

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Posted 21 December 2009 - 08:53 PM

It has been pointed out that the earlier commodores sharedthe same indicator mechanism as the torries and all that was done toactivate the hazards was to bridge the wires at this point, hence abutton on the steering column was used. this is possibly an easy mod,but doesnt overcome the reversing lamp prob. I havent followed thisaspect up 1st hand but it sounds believable.

What do you know, I didn't even see this part in the linked topic first time!

I think that answers the question, you'd most likely need a separate switch for the hazard lights only to override the reverse lights. Otherwise possibly some slightly more complex trickery which would mean that both the hazards and the indicators would override the reverse lights. If you're happy with the second, maybe check out an early American car brake/indicator wiring diagram as they blink the brake lights at the rear for turn signal and the blinking overrides even with foot on the pedal.

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#7 davelh

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Posted 21 December 2009 - 10:06 PM

I cant for the life of me find that circuit, but I do remember people talking about changing the lamp bases for brake/tailight bases and running a twin filament globe, one for indicators and one as hazards.
I think you could also buy a kit to do a similar thing.
Dave

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#8 _torbirdie_

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Posted 22 December 2009 - 01:14 PM

The circuit discussed in the link above has some extra requirements over the factory implementation. Looking at a VK one I have here it seems like you have everything required, you just need to add an always-on 12V feed because the hazards need to operate without the ignition on. What I have in front of me:

Black: horn
Brown: always-on 12V supply for hazard switch
Purple: ignition switched 12V supply for indicator switch(es)
Dark blue: RH indicator out
Light blue: LH indicator out

So hopefully you should be able to just connect everything as before and you will have one extra wire which needs the always-on 12V for the hazard light switch. Grab a multimeter (ohmmeter) and run the switch through the different positions to figure out what is what.

It sounds possible, though Ive never inspected one of the comm hazard switches to see how it works. It should just basically connect all four lamps to the wire coming from the existing flasher cone. If it works off the same flasher cone the switch must also isolate the flasher from its normal supply from the fuse panel, otherwise the live 12V wire connected will continue to power all the accessories when the ign is in the off position. There is no mechanism to cope with the reverse lamps as the car the switch is from has separate reverse and indicators lamps.

To overcome the non operation of the flashing lamps in reverse(the front will glow permanently too if reverse is selected), may I suggest a simple fix:

Purchase a simple bosch 30,85,86,87,87A 5 terminal relay, as on http://www.bcae1.com/relays.htm
The idea is to use the relay to insert a break in the wire powering the reversing lamps when you select the hazards.
From the hazard switch, connect a contact that becomes live(when the switch is activated) to terminal 85 of the relay, connect 86 to ground. What needs to be examined here is that you find a contact that goes from zero to 12V and isnt in permanent contact with the indicator contacts for the switch, otherwise it wont work and will bypass reverse completely.

There are a number of ways you could do the next bit, here's one:
find the pink wire that goes from the reverse switch to the fuse panel. Disconnect it at the fuse panel and connect to terminal 30 of the relay, connect another wire to terminal 87 and run it back to the same place on the fuse panel. The idea is that contact between 30 and 87 will be broken when power is applied to the relay.

It will only cost you ~$10 and may well be worth the trouble to have the lamps work in any possible scenario.

Edited by torbirdie, 22 December 2009 - 01:28 PM.

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#9 76lxhatch

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Posted 22 December 2009 - 04:32 PM

The hazard switch connects a single input wire to both of the normal output wires for left and right indicators. This input is different to the normal input for the indicator switch which only connects one output at a time. While the hazard switch is on, the indicator switch appears to be completely disabled.

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#10 _torbirdie_

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Posted 22 December 2009 - 09:03 PM

The hazard switch connects a single input wire to both of the normal output wires for left and right indicators. This input is different to the normal input for the indicator switch which only connects one output at a time. While the hazard switch is on, the indicator switch appears to be completely disabled.

Giving it some further thought, perhaps the comm switch isnt suitable as it would not operate the indicators properly while the car is in reverse, which would be a definite canary.. The standard torry mechanish relies on the contact between the rear lamp and reverse lamp wire being interupted when the indicator is used for that side. On the commodore the reverse lamp wire would have no reason to be going through the indicator switch, though its possible gm just modified the existing switch and left that part there, but I doubt it.

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#11 76lxhatch

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Posted 22 December 2009 - 09:19 PM

Hmm, I think I understand what you mean. There is definitely no provision for the reverse lamp to run through the VK switch as shown in the LH wiring diagram. However there looks to be a couple of extra wires in the VB pic in the first post above, there would need to be 6 plus the horn I believe.

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#12 _Woodsy_

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Posted 24 December 2009 - 08:31 AM

My Kingswood had a Hella Push pull type switch fitted to the dash, It lit up once pulled and blinked with the hazard lights. Unfortunately i have pulled it out so i can't tell you what wires went where, but the Kingswood uses the blinkers as reverse lights too. It can still be bought from Hella i think but doesn't show in there online catalogue.

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#13 enderwigginau

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Posted 19 January 2010 - 04:49 PM

Must throw a battery in the LX and see what happens to the hazards when reverse is selected.

Mine is a self-contained period unit I pulled from an LH. �Has it's own flash-can, so does away with some of the issues that using the existing can causes.

Grant..

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#14 Collo

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Posted 20 January 2010 - 12:52 AM

My old LJ had hazard lights. There was a switch under the dash, you flick that and put a blinker on and they both flashed. No idea how it was wired though.

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#15 _330OLX_

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Posted 25 February 2011 - 05:52 PM

Hi

My uncle is helping me wire up hazzard lights into my torana. I have a swich from a VB commodore with the wiper section removed.

I understand i need more than this to make it work and im guessing there is a wiring diagram here
http://www.gmh-toran...showtopic=29851
but i cant seem to upload it as it reterns to forum menu.

Can anyone help me out.
Chears Neil

DOES ANYONE KNOW IF NEIL GOT THIS SETUP UP WORKING ?

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#16 Neils LX

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Posted 25 February 2011 - 06:58 PM

Hey mate, have not got it working yet i should get up off my ass and finish trying.
Josh put this up http://www.gmh-toran...m-instructions/
I may try it out using the XC flasher unit on a donar car out the back like Dr terry suggested.
Chears Neil

Edited by Neils LX, 25 February 2011 - 07:07 PM.

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#17 _cruiza_

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Posted 25 February 2011 - 09:28 PM

There may be some over thinking going on here

simple solutions are usually the best

wire up indicator Hazard light as per Commodore

Now for the cunning bit

use a double filament bulb and have the second filament as your reverse light

Ok to clever for you other way is to use diodes etc but I am too lazy tonight to draw that up unless you really need me too but my first suggestion is easier and I think better
the only etc work is run an extra wire from column to back and using brake light bulb holders for the twin filament bulbs

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#18 _Squarepants_

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Posted 27 February 2011 - 07:07 PM

My old man wired up the hazards in my LH...
When you select reverse, all indicators come on... Kinda cool, as who else's car does that???
It has 2 flasher cans in it...
It has an individual switch for the hazards, don't need to move indicator switch.
I don't understand this voodoo but I can get more info if anyone is interested???

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#19 _torbirdie_

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Posted 27 February 2011 - 07:38 PM

My old man wired up the hazards in my LH...
When you select reverse, all indicators come on... Kinda cool, as who else's car does that???
It has 2 flasher cans in it...
It has an individual switch for the hazards, don't need to move indicator switch.
I don't understand this voodoo but I can get more info if anyone is interested???

sounds like those low budget kits they use to put on the shelf at kmart, $2 flasher cone + $1 switch + four wires to splice onto each indicator.

You many think the 'side effects' are cool, but really they are just "indicators' that the system isnt suitable for cars with combined indicators/reverse lamps. There is really no need for an additional flasher cone(just an appropriate switch ), the standard one was never designed for 4 lamps at once, and should be replaced with one that is rated for six lamps to cater for trailer as well.

Edited by torbirdie, 27 February 2011 - 07:41 PM.