I need to know which fuse to connect to, in the engine compartment, to use as a power source for the illuminated grill star.
THe better way may be to find a 12 volt source that turns on and off when the ignition is on/off. Then install an inline fuse to protect the circuit.
Othewise you can use the cigarete outlet circuit. The star shouldn't draw much current so you shouldn't have any problems.