I'm a new owner of a '91 FJ, it's from California and has an alarm system. I have not had a chance to poke around, but I'm curious if this was an OEM option from Toyota? I'm thinking it is not a Toyota option. The key fob is not an original Toyota fob but that doesn't necessarily mean the alarm system is aftermarket. The reason I'm asking around is because I've had a recent issue. The one key that came with it was extremely worn so I decided to have an extra one cut. The brand new key worked perfect. However, when used the original key the truck would not start at all and the alarm would go off every time I would try to use the original key. I put the new key in and it started right up. Does anyone have any insight on alarm systems and this weird key issue? I've never had an alarm system in my forty years and I'm thinking I should just have it removed.