Momentary Switch to Operate Central Locking Lock/Unlock

Hello. I'm looking to use a momentary switch in my classic car to operate the door lock/unlock solenoids as a central locking feature. The solenoids require a +12V pulse to operate on either the lock or unlock inputs. So, I'm trying to find a circuit such that: First presss - doors locks (and a LED lights) Second press - doors unlocks The circuit then cycles on further presses. Additionally, the momentary switch I would like to use has a LED that lights on closure so that would be nice to use that on the lock signal. I was hoping to use the following posted circuit: https://www.the12volt.com/relays/relaydiagram65.html but I'm not sure what the latching relay type is. Is it an impulse latching relay? Could someone please suggest a part number that is commonly available? Also, I'm not quite sure how this circuit works as I don't understand how the latching relay in this circuit is reset for additional presses of the switch. Could anyone shed some light on this?

You probably can't pick this up at your local electronics store, but easy to order online: https://www.altecautomotive.co.uk/latching-relay-12v--25a--braltry0-728-02-23-3640-p.asp It's also important to note this relay requires a negative pulse to switch, not a positive. That means the diagram will need to be modified. Also, even though the terminal configuration looks like a typical automotive relay, it says they will not fit a standard relay socket. You'll have to use individual connectors for each terminal.My ex once told me I have a perfect face for radio.

Thanks. Do you think the following cheaper relay from RS components (UK) would be a suitable alternative to the Durite? Part no 718-1878. It looks like a non polarised impulse latching relay that doesn’t specifically require the momentary switching on the negative side. I’m not worried about it not having the standard spade connectors. I couldn’t find any other cheaper non polarised impulse relays that are easily bought in the UK.

That looks like a great option. There's only one way to find out for sure.My ex once told me I have a perfect face for radio.