Hey, I have a 93 Diesel HzJ73 landcruiser with auto locking hubs. The problem I am having is the hubs wont lock. I have put a volt meter to the connection and it gets 20 volts when the hub lock button is pressed (though it seems they should get 24)? It seems this is a common problem, any simple fixes? I have not yet put 24 volts directly to the hubs (that's the next step) to figure out if it is a electrical issue or whether something inside the hubs is stuck? any advice would be appreciated. Also if it is a persistent problem I am thinking about switching to manual hubs, and wondering if anyone has part numbers for new ones that would fit. Thanks.