Before I over complicate this process, I want to check with the community to see if I’m over complicating the process ;).
A double throw double pole rocker switch is designed to easily switch power from one destination to the next from the same power source.
To modify a standard switch so the polarity is reversed, I would connect the ON leads together, criss crossing them so they’re reversed. Then, instead of ON/OFF/ON, the switch would be UP/OFF/DOWN or NORMAL/OFF/REVERSED.
To simulate this with relays so it’s all done digitally through HA, I could take two relays, feed one relay’s center connector with 12V+ and the other with 12V-, then connect the leads to the actuators and program the relays to switch back and forth.
The one piece that is missing is the OFF. If the relays don’t have a neutral position between the normally on and normally off position, and they don’t fire together exactly in sync, then I imagine I would create a short, blow a fuse in the 12V power supply and/or not blow a fuse and cause a fire.
The only thing I can think of is to place a third relay on one of the leads from the power supply, then program a routine to ensure that the power is cut before the polarity is changed.
Am I on the right track or is there a better way to do this?