I put mine in and I wired it to the ign I don't like the idea of cutting the fuel pump as it may damage the injectors I'm using Telstra and put 40 dollars on with the option for it to last 6months if u put 60 on or more lasts 12months
Maybe set it up to a relay system for you positive battery lead, cut all the power? At least if it malfunctions you'll no exactly what it is.
Yeah it works well but I've recently disconnected the earth from the tracker because I've got to change the engine and since the battery is disconnected I didnt see the point of it being fully connected