I'm a mech engineer trying to use 2 vandal resistant, SPDT, latching switches to control a power distribution module. The module has an internal bi-stable relay to turn the outputs on and off. The trigger wire for the module is fed 12v to turn on and then turns off when grounded. I need to use 2 switches for activation (1 inside the vehicle, 1 outside) and don't want to use rocker switches (although i wouldn't be asking this question if i did).
My current setup is using the 2 latching vandal switches in a conventional 3-way setup which works fine to activate the module but i can't figure out how to get the circuit to pull down the trigger to ground when I want to shut it off. I was thinking a motor reversing circuit with relays but was hoping for a simpler, and more space saving solution. Any suggestions would be great.
Here's the datasheet for the module that shows the recommended control wiring: https://www.littelfuse.com/media?resourcetype=datasheets&itemid=99c7c610-ef0f-487c-a3ff-aa85e05d47be&filename=sl-series-pdm-datasheet