I'm currently working on putting custom seats in my Saab; Currently I'm struggling with figuring out how to "cancel" the seat airbag, and disable the seat's occupancy sensor.
Now, I think I have an idea as to how I'd cancel the seat airbag, it seems that I'd want to connect a 3.3 ohm resistor to a 1 amp fuse. Here's a similar system made by someone else for their Subaru. Then I'd just cut the male connector and solder it to the connector. It should be fine to just set it and forget it then.
The tricky part now, is disabling the seat's occupancy sensor. I found a different post here that says "If you want to completely deactivate the warning, you could just solder a diode to a male plug and be done with it. Just plug it in and tuck the dangling (unplugged) sensor cable under the seat.". But I just don't know what kind of diode I'd need, and I'm also unsure if that's really all it takes.
I know this isn't an automotive forum by any means, but I thought you guys might have a better understanding of all of this than I would.