Bistable Latching Relay question

hello

I read on the internet that its possible to make a latchign relay out of 2 normal relays.

Does anyone know how to go about this?

I am trying to make a circuit where when i press lock button on my remote (negative pulse) it would latch a relay to kill a ground connection in this one wire, and when i press the unlock button (also negative pulse) it would feed the ground into this one wire.

basicly need to make a pulse to activate a relay so it would switch contant and a pulse to switch it back off

Thanks for any info. i heard u can make them from 2 standard relays, cuz buying them is not cheap