Found the diagram at http://www.wiringdiagrams21.com
go to wal-mart they have a harness that plugs into the factory harness and wires to radio
try www. haynes.com
wiring harness on 3.1 litre Chevy
sprak plug wiring diagram chevrolet lumina 1996 3.1
Begin by removing the wiring harness from your 1996 Chevy Corvette horn. Remove the horn retaining bolts. Reverse the process to install the new horn.
Standard 2 Piece Harness Up To Late 1990
Most auto parts stores can get you a wiring diagram for a 1996 Hyundai Elantra. If not in stock, the store can order a diagram for you.
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correct order for spark plug wire for a 1996 Chevy Tahoe