wiring to hazard light

I have recently installed a alarm to Nissan Mistral 1995. But I could not wire (12 trigger) to hazard light. I could not find right wire at Hazard switch (at dash board), to piggy back 12V trigger coming from alarm control . I checked    at the Hazard light itself, both light terminals shows ground.    If I connect   12V trigger I need to disconnect one grounded terminal by using   a relay. But I cannot     use 4 relays to all 4 lamps. There should be    a way to wire at the Dash switch. How to find correct wire. your reply highly appreciated.

You'll have to use 2 relays or diode isolate the triggers. you'll find two wires in the steering wheel column

Look for the left and right indicator wires in the steering column loom or drivers side floor loom. If a single hazard wire it has to be made POS usually an alarm adjustment then split with two 1N5404 diodes, band away from alarm.
You might have the wires at the hazard switch.
Grounds fed hazard switches (and I've no idea if Nissans have them) work as following.
Take a test light (incandescent bulb) or making one using a spared bulb, one side to ground, other side to each wire in turn. If this brings on the hazards, then they turn off when removed, that's your wire.
No point in testing at the light, you test at the switch.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

The wires you're looking for should be some of the following, GREEN/ blue, GREEN / WHITE, GREEN/ YELLOW, GREEN/ black, GREEN/ red.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

What are you "triggering" with the hazard lights?

Thanks for the idea. I have used   a bulb, to test at the switch. One side ground and tested    all wires at the switch, could not fine any trace ( to light up the hazard light) . Used it other way as well ( ie one side   12V+), not succeeded .

Look at the colours at the back end they will be in the driver side floor loom, steering column loom body control if there is one and at the hazard.
You're testing the wrong way. One bulb wire to ground, other side to each wire in turn. If only 3 or 4 wires at the switch this should activate the flashers.
If 6 or more wires again, one side to ground turn your indicator to left with ignition on. One wire will flash. That's your left.
Now repeat with the right hand side.


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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Best way to to turn the switch T/S and/or hazard switch on and off and find which wires go flashing.