1974 Z28 Coupe, 4-speed, HEI, Gauges. I ordered an ENGINE wiring harness from M&H. It has way too many wires. Sent pictures of my original harness and they said it was for a NO-GAUGE car. My car has gauges, and they all work. I have a VOLT gauge, and they said early Camaros had AMP gauges. After looking at examples online, cars from 1970 to 1981 seemed to have both AMP and VOLT types. I wonder, was the difference between getting an AMP gauge vs. a volt gauge the TYPE-LT vs. Coupe? Did TYPE-LT get AMP gauge and Coupe get Volt gauges?