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 FB73260 Technical Specifications:

• Application: 1967 Pontiac Firebird.
• Hood Mounted Tachometer; Coil Side.
• Correct wire colors and factory style terminals for straightforward circuit tracing.
• Sold individually.