Electrical – How to unlatch relay with relay

circuit-designlatchrelay

I have problems with unlatching relay with relay..
Schematics below:

schematic

simulate this circuit – Schematic created using CircuitLab

The purpose for this is to light on car sidelights when car is unlocked, when pressing lock button it turn off sidelights. Car gives negative impulse for locking and/or unlocking.

My problem – When Door unlock impulse is given then 1st relay latch himself on so the lights are on (OK, thats what i need), but when i give lock impulse it do not energies 2nd relay to turn off sidelights.

What im doing wrong?

Best Answer

You have the coil of RLY2 connected to the wrong place. Just rewire it like this:

schematic

simulate this circuit – Schematic created using CircuitLab

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