I realize that people will be unwilling to share this information on a public forum so please feel free to PM me..
I have an old Toad Immobilizer fitted to me D90. I think the magnetic switch which deactivates the immobilizer is faulty as the little red light no longer flashes and I don't hear the click anymore when I try to switch it off. Needless to say the truck doesn't start anymore. I believe this system works just by interrupting power to the starter by using a relay.
Has anyone had any success bypassing these immobilizers? If so could you let me know how?