1966 Engine Harness, V-8 & 396 with Gauges (CH60305) is made in the USA and is factory correct for 1966 Chevelle and El Camino applications. The harness includes provisions for the gauges identified in the part name.
The harness uses correct colored wires and correct ends to match factory wiring.
This Harness is made in the USA. It is factory correct for your 1966 Chevelle or El Camino. We use correct colored wires and ends to make your installation simple.