where would i be able to find the immobiliser in an el falcon, i have no interior light ive checked the crt lmp fuse, i do have headlights working though . the engine fans work, they kick in at what should be start up

your immobiliser is built into the BEM. The >insert colour here< box above you knee when your sitting in the drivers seat.

you can tell if your car is immobilised if the smartlock jewel is flashing fast

if you can't start your car but the jewel is not flashing any codes it possible that one or more of the soldered joints within the BEMs PCB have gone dry. In which case you will need a new one

oh and BTW courtesy light and headlights arn't run off the same fuse