A tachometer needs a clean signal from the ignition to read accurately, and a spliced feed is a common cause of a needle that wanders. This harness supplies that circuit with correct connectors and wire.

American Autowire 28990 Specifications:

• Application: 1968 Buick Skylark.
• Tachometer Extension to Tachometer.
• Correct wire colors and factory style terminals for straightforward circuit tracing.
• Sold individually.