Check the listing for details. 2Sets HEI Distributor Pigtail Harness Dual Connectors Power & Tach 12V. Color: Grey, Condition: New. Listed at 6.85 USD. Product specifics: Color: Grey Material: Hi-Temp Material Connector Type: Female Wiring Harness Connector Type: Replacement Wire Connector Style : HEI Pigtail Wire Length : 7.5 inch Pins Per Connector : 2 Wire Gauge: Positive (Red): 12AWG, Negative (Green): 14AWG Quick-Disconnect : Yes HEI Distributor Pigtail Harness： A HEI dual pigtail connector for GM HEI ''coil in cap''. This new connector helps clean up your engine bay by eliminating the use of single spade connectors to make battery and tachometer connections. This connector is a tight positive fit with a locking tab and shark fin on it to ensure that the connection between your wiring and HEI stays intact. The connector houses two wires, one bright red for your 12-volt key switched wire, the other green for you tachometer to wire up. The high temperature connector has two ten-inch leads coming out of it.