Car Radio Wiring Diagram and Car Stereo Wire Diagram Whether your an expert installer or a novice enthusiast with a 1998 Chevrolet Lumina, an automotive wiring diagram can save yourself time and headaches. One of the most time consuming tasks with installing a car stereo, car radio, car speakers, car amplifier, car navigation or any mobile electronics is identifying the correct wires for a 1998 Chevrolet Lumina | Stereo Wiring Diagram 1998 Chevrolet Lumina Speaker Sizes. Front Speakers Size: 5 1/4″ Speakers Rear Speakers Size: 6″ x 9″ Speakers *If you know any other missing information please use the comment box below to notify us. SOLVED: Need wiring diagram for 1998 chevy lumina 3.1 - Fixya SOURCE: Wiring Diagram 1998 Chevy S-10 starter replacement. The starter has one large cable from the battery positive, and a wire that goes to the solenoid (Part of the starter) that becomes hot when the key ignition is turned to start. This also passes through the neutral safety switch. Chevrolet Lumina Questions - Where is the starter relay in 6 Where is the starter relay in a 1998 chev Lumina. Per wiring diagram this is between ignition cylinder and starter, and has yellows wires in, purple out to starter,.