You should have a 12ga wire from the IGN terminal on your fuseblock going to the + side of the coil, along with the RED wire of the distributor/coil wire loom. The ORANGE wire goes to the - terminal, the BLK goes to engine ground. Be sure that the engine and chassis have a good common ground. With the key in the START or RUN position, you should have +12V at the coil + terminal.