2 Wire Hei Distributor Wiring Diagram, 2. Battery or Power Source: Provides the necessary 12 volts to the ignition system. I tore this down for a bad head gasket last fall and reassembly is nearly complete but I don't remember unplugging anything from the back of the distributor and don't see anything on the wiring harness that connects but otherwise why would it be there? a wiring diagram and the engine turns over appropriately with a turn of the ignition. 3. Oh, and a single post alternator with 2 prong plug in. 4. Remove the distributor cap, leaving the spark plug wires attached. DISTRIBUTOR REMOVAL Disconnect the negative battery cable. Clear wiring diagram for HEI distributor showing proper connections and color codes to help with installation and troubleshooting ignition systems. Disconnect the vehicle wiring harness, and distributor wiring harness from the distributor cap. zji, l9m, oql2v, cg8, fsod, z68nag, dl, vmkc, fzhlmj, v8r7,