Complete Engine Harness This is a Caspers "Complete 86/87 Engine Wiring Harness" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. "Complete 86/87 Engine Wiring HarnessThis engine harness is OEM design with improvements made to certain... MSRP: Was: Now: $1,295.00 Add to Cart