[SLP IROC-Z]

the line lock solenoid has two wires coming off it (as you know) one wire needs positive voltage and the other needs negative/ground in order to energize the solenoid. the easiest way to wire one into a 4th gen is to get positive power of the distribution box on the drivers side fender skirt, this is the most convenient place and allow your power wire to be less than foot long (there should be a fuse in between that wire). then run the other wire into the car to a switch, run a wire off the other terminal of the switch and ground it. the switch will activate the solenoid by completing the ground circuit when in the on position. the simplest way to wire in an indicator light would be to splice into the ground wire between the switch and solenoid and then wire the other side of the light to power. now when you activate the line lock your indicator light will have ground and turn on.