illum is short for illuminate. I would suspect this is your dash lights.
lights for dash heater controls
Yes, so wdo just stand on engine fuse box.
Well, isn't that a happy little question! "ILLUM" stands for "illumination" in a fuse block information. It's there to let you know which fuse controls the lights or backlighting for a particular component in your vehicle. Just remember to always refer to your vehicle's manual for specific details and keep on painting those happy little fuses!
It stand for Screw Terminal (ST)
Cigarette lighter.
Ignition off draw.
The Gauges and Dash Lights have a fuse called "Illum / Guages". The fusebox located by the driver door should contain the fuse. If you look at the back of the cover of the fuse box it will tell you what fuse to check. The Dome Light (the light on the roof) has a fuse inside the engine fusebox.
That is in the fuse panel inside the car. Marked I/P illum (instrument panel illumination)
courtesy
Possibly Fuel Injectors.
Electronic Fuel Injection Electrical Control Unit. It's the fuse for the computer in the car.
Trailer Tow