-original 1/2 x 14 N.P.T.F.-, with factory gauges/Rally Gauges (correct resistance and connection, produces accurate... see more-original 1/2 x 14 N.P.T.F.-, with factory gauges/Rally Gauges (correct resistance and connection, produces accurate gauge display)
-designed and made in U.S.A.-, modern solid-state circuitry, simple screw-in replacement of original transistor circuit... see more-designed and made in U.S.A.-, modern solid-state circuitry, simple screw-in replacement of original transistor circuit board inside amplifier box Note: Requires use of part #90271 TRANSISTOR IGNITION AMPLIER BOX EXTENSION