Hi to all , lastnight i heard a clicking sound comen from my fuse box . It turnes out to be the fuel injection relay , i changed it over with the one form the horn , as these are the same but it still kept clicking . But when i start the car it stops , and when the car is of it wont stop clicking . I found out when the car auto locks it stops dead , but if i push the key to lock my car it starts clicking again . There is no lights comen up on the dash to say that there is anything wrong . Should i unplug the battery at night cos i dont want it to go up in smoke lol . What is going on ????? . Has any one had the same thing happen to them ??????? . Can any one help ??? Car is a 2001 lexus is 200 sport . Thanks for your time B.Jay