Bizarre Electrical Issue: Compartments lock themselves

that's a ground wire..try a different ground or clean up that wire..get a good solid ground ....then trace it back to where it goes if you can....it sounds like that's the bad ground...so it's the connection from that wire or to where that wire goes....if that doesn't work, I'd find the 12v fuse for the locks and pull it, wait ten seconds and put it back in which might jolt the brain of the thing.