Currently to connect a coupler you have to press L and connect it, I want to add doors using the couplers as hinges, but I dont see a way to have it pre-coupled
here is an example. This goes in the primary coupler node. The secondary node just keeps the same "tag" as before. {"couplerTag":"dump_door_hinge_l","couplerStrength":175000,"couplerStartRadius":0.01,"couplerWeld":true} the couplerStartRadius makes it connected on spawn if the 2 nodes are within distance of the value the couplerWeld makes the coupler not able to reattach if it is broken.