1986 GM Reprint OEM Shop Manual 8A Electrical Diagnosis Supplement 1986 C4 Corvette ST-364-86-EDM

GM OEM 1986 C4 Corvette Electrical Diagnosis Supplement ST-364-86 EDM

professional copy with 6 x 36" long wiring diagrams.

Expensive, until you need to work on a 1986. Useful for 1985 and 1987 too