1973 nova wiring harness | eBay Find great deals on eBay for 1973 nova wiring harness. Shop with confidence. Skip to main content. eBay Logo: 73 Chevy Nova Engine Wiring Harness, V8 with Factory Gauges, Car Radio Stereo Wire Harness for 1973-up Chevrolet Buick Cadillac GMC Pontiac (Fits: Nova) Brand New. 1973 CHEVROLET NOVA Wiring Harnesses - Summit Racing Find 1973 CHEVROLET NOVA Wiring Harnesses and get Free Shipping on Orders Over $99 at Summit Racing!