Hello and welcome aboard, fellow 'Forum Newbie' =)) I've only been here for 13 days, but I figure that's long enough to welcome others !=))
I've read several times, here on this forum as well as at others, that it's never recommended or a good idea to disconnect, 'disable' and/or bypass the seat safety switch !:~\ i.e. - it's an important safety switch; there for a good reason; can be life/or limb saving &c.
So best to repair the broken wires, somehow. But I have no idea how. Maybe if you posted some pic's it could help. Or maybe if you remove your seat deck you'd then have more access to repair? Again, I don't know. But someone will hopefully swing by this thread who does. ;-)